Trader consensus overwhelmingly backs None (88.5%) for a men's Calendar Grand Slam in 2026, mirroring the feat's Open Era rarity—last achieved by Rod Laver in 1969—amid surging ATP depth, surface variability across Australian Open clay-to-hardcourt shifts, and injury risks over seven grueling months. Carlos Alcaraz's 11.6% implied probability stems from his youth at 21, versatile all-surface game, and recent dominance with French Open and Wimbledon titles in 2024, positioning him as the top contender despite Jannik Sinner's Australian Open and US Open wins that year highlighting distributed talent. Realistic challenges include Alcaraz avoiding withdrawals, sustaining peak form through draw luck and no major upsets, or an ascendant Sinner consolidating rankings atop the leaderboard without fatigue or fitness setbacks.
Experimental AI-generated summary referencing Polymarket data · Updated$177,215 Vol.
$177,215 Vol.
Dec 31, 2026
None
89%
Carlos Alcaraz
12%
$177,215 Vol.
$177,215 Vol.
Dec 31, 2026
None
$83,085 Vol.
89%
Carlos Alcaraz
$0 Vol.
12%
This is a market to predict who will win a men's tennis Calendar Grand Slam in 2026.
This market resolves to the single male player who wins the Men’s Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match.
If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Alcaraz does not win the 2026 Australian Open) this market will resolve immediately to "No".
If at any point it becomes impossible for anyone to achieve a Calendar Grand Slam in 2026 this market will resolve immediately to "None".
Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official.
If any of the 2026 Grand Slam Men’s Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”.
The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.Trader consensus overwhelmingly backs None (88.5%) for a men's Calendar Grand Slam in 2026, mirroring the feat's Open Era rarity—last achieved by Rod Laver in 1969—amid surging ATP depth, surface variability across Australian Open clay-to-hardcourt shifts, and injury risks over seven grueling months. Carlos Alcaraz's 11.6% implied probability stems from his youth at 21, versatile all-surface game, and recent dominance with French Open and Wimbledon titles in 2024, positioning him as the top contender despite Jannik Sinner's Australian Open and US Open wins that year highlighting distributed talent. Realistic challenges include Alcaraz avoiding withdrawals, sustaining peak form through draw luck and no major upsets, or an ascendant Sinner consolidating rankings atop the leaderboard without fatigue or fitness setbacks.
This is a market to predict who will win a men's tennis Calendar Grand Slam in 2026.
This market resolves to the single male player who wins the Men’s Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match.
If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Alcaraz does not win the 2026 Australian Open) this market will resolve immediately to "No".
If at any point it becomes impossible for anyone to achieve a Calendar Grand Slam in 2026 this market will resolve immediately to "None".
Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official.
If any of the 2026 Grand Slam Men’s Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”.
The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.
This market resolves to the single male player who wins the Men’s Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match.
If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Alcaraz does not win the 2026 Australian Open) this market will resolve immediately to "No".
If at any point it becomes impossible for anyone to achieve a Calendar Grand Slam in 2026 this market will resolve immediately to "None".
Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official.
If any of the 2026 Grand Slam Men’s Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”.
The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.
Market Opened: Jan 6, 2026, 2:43 PM ET
Volume
$177,215End Date
Dec 31, 2026Market Opened
Jan 6, 2026, 2:43 PM ETResolver
0x2F5e3684c...This is a market to predict who will win a men's tennis Calendar Grand Slam in 2026.
This market resolves to the single male player who wins the Men’s Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match.
If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Alcaraz does not win the 2026 Australian Open) this market will resolve immediately to "No".
If at any point it becomes impossible for anyone to achieve a Calendar Grand Slam in 2026 this market will resolve immediately to "None".
Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official.
If any of the 2026 Grand Slam Men’s Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”.
The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.Trader consensus overwhelmingly backs None (88.5%) for a men's Calendar Grand Slam in 2026, mirroring the feat's Open Era rarity—last achieved by Rod Laver in 1969—amid surging ATP depth, surface variability across Australian Open clay-to-hardcourt shifts, and injury risks over seven grueling months. Carlos Alcaraz's 11.6% implied probability stems from his youth at 21, versatile all-surface game, and recent dominance with French Open and Wimbledon titles in 2024, positioning him as the top contender despite Jannik Sinner's Australian Open and US Open wins that year highlighting distributed talent. Realistic challenges include Alcaraz avoiding withdrawals, sustaining peak form through draw luck and no major upsets, or an ascendant Sinner consolidating rankings atop the leaderboard without fatigue or fitness setbacks.
This is a market to predict who will win a men's tennis Calendar Grand Slam in 2026.
This market resolves to the single male player who wins the Men’s Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match.
If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Alcaraz does not win the 2026 Australian Open) this market will resolve immediately to "No".
If at any point it becomes impossible for anyone to achieve a Calendar Grand Slam in 2026 this market will resolve immediately to "None".
Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official.
If any of the 2026 Grand Slam Men’s Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”.
The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.
This market resolves to the single male player who wins the Men’s Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match.
If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Alcaraz does not win the 2026 Australian Open) this market will resolve immediately to "No".
If at any point it becomes impossible for anyone to achieve a Calendar Grand Slam in 2026 this market will resolve immediately to "None".
Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official.
If any of the 2026 Grand Slam Men’s Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”.
The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.
Volume
$177,215End Date
Dec 31, 2026Market Opened
Jan 6, 2026, 2:43 PM ETResolver
0x2F5e3684c...Trader consensus overwhelmingly backs None (88.5%) for a men's Calendar Grand Slam in 2026, mirroring the feat's Open Era rarity—last achieved by Rod Laver in 1969—amid surging ATP depth, surface variability across Australian Open clay-to-hardcourt shifts, and injury risks over seven grueling months. Carlos Alcaraz's 11.6% implied probability stems from his youth at 21, versatile all-surface game, and recent dominance with French Open and Wimbledon titles in 2024, positioning him as the top contender despite Jannik Sinner's Australian Open and US Open wins that year highlighting distributed talent. Realistic challenges include Alcaraz avoiding withdrawals, sustaining peak form through draw luck and no major upsets, or an ascendant Sinner consolidating rankings atop the leaderboard without fatigue or fitness setbacks.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions