Player dossier
John Wolf Jeffrey
USA
Born Dec 21, 1998
Overall: 1,627Hard: 1,540Clay: 1,561Grass: N/A
Season record: 5–0Win % 100%
#533Elo•ATP #804
Performance console
Loading Elo history...
Last 10 matches — Global
Total Δ Elo 0.0Loading recent matches...
Elo delta per match
Positive bars = gains • Negative bars = losses
Evaluating Elo deltas...
Upcoming matches
ScheduledNo scheduled singles matches.