Garrett Johns enters this Kingston Challenger first-round matchup as the clear favorite against lower-ranked Guillaume Dalmasso, with the significant ATP ranking gap (roughly 270-380 versus 597-606) and Johns’ greater experience on the North American hard-court swing driving trader consensus. Johns has competed in ATP-level events such as Newport and Los Cabos qualifiers this summer, while Dalmasso’s recent results have come mainly at ITF and lower Challenger level with limited success. No head-to-head history exists, and both players appear fit with no reported injuries or late withdrawals. The surface and schedule timing favor the higher-ranked American, though Dalmasso retains realistic upset potential as an underdog in a best-of-three format where early-round variance remains high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedAll Sports
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Garrett Johns – Guillaume Dalmasso
Moneyline
$167 Vol.
This market will resolve to 'Garrett Johns' if Garrett Johns advances against Guillaume Dalmasso.
This market will resolve to 'Guillaume Dalmasso' if Guillaume Dalmasso advances against Garrett Johns.
If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.
If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.
If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.
The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Market Opened: Aug 16, 2026, 1:05 AM ET
Resolution Source
https://www.atptour.com/en/scores/currentResolver
0x65070BE91...Garrett Johns – Guillaume Dalmasso
Moneyline
$167 Vol.
This market will resolve to 'Garrett Johns' if Garrett Johns advances against Guillaume Dalmasso.
This market will resolve to 'Guillaume Dalmasso' if Guillaume Dalmasso advances against Garrett Johns.
If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.
If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.
If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.
The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Market Opened: Aug 16, 2026, 1:05 AM ET
Resolution Source
https://www.atptour.com/en/scores/currentResolver
0x65070BE91...Garrett Johns enters this Kingston Challenger first-round matchup as the clear favorite against lower-ranked Guillaume Dalmasso, with the significant ATP ranking gap (roughly 270-380 versus 597-606) and Johns’ greater experience on the North American hard-court swing driving trader consensus. Johns has competed in ATP-level events such as Newport and Los Cabos qualifiers this summer, while Dalmasso’s recent results have come mainly at ITF and lower Challenger level with limited success. No head-to-head history exists, and both players appear fit with no reported injuries or late withdrawals. The surface and schedule timing favor the higher-ranked American, though Dalmasso retains realistic upset potential as an underdog in a best-of-three format where early-round variance remains high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedBeware of external links.
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