Juan Ignacio Chela defeated Florian Mayer 7-5 7-5 in the Davis Cup WG R1: GER vs ARG round robin on clay. The upset overturned the form book — Florian Mayer came in leading the head-to-head 4–1. Juan Ignacio Chela narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-05-08 | Rome Masters | R16 | clay | Florian Mayer | 7-5 6-4 |
| 2008-01-07 | Auckland | R16 | hard | Florian Mayer | 6-3 7-6(7) |
| 2006-07-31 | Sopot | QF | clay | Florian Mayer | 6-4 6-0 |
| 2004-10-11 | Vienna | R32 | hard | Florian Mayer | 6-4 6-4 |
| 2004-04-12 | Estoril | SF | clay | Juan Ignacio Chela | 6-3 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (17 vs 200). ATP, WTA & Challenger.