1991 ATP Championship Series, Single Week
Singles
Columns: Tournament | Surface | Week | Winner and score | Finalist | Semifinalists
Indian Wells | Hard | March 4 | Jim Courier (16) 4–6, 6–3, 4–6, 6–3, 7–6(4) | Guy Forget (3) | Stefan Edberg (1) Michael Stich (11) | Key Biscane | Hard | March 11 | Jim Courier (13) 4–6, 6–3, 6–4 | David Wheaton | Stefan Edberg (1) Richey Reneberg (24) | Monte Carlo | Clay | April 22 | Sergi Bruguera 5–7, 6–4, 7–6(6), 7–6(4) | Boris Becker | Horst Skoff Goran Prpić | Hamburg | Clay | May 6 | Karel Nováček 6–3, 6–3, 5–7, 0–6, 6–1 | Magnus Gustafsson | Michael Stich Goran Prpić | Rome | Clay | May 13 | Emilio Sánchez 6–3, 6–1, 3–0 retired | Alberto Mancini | Goran Prpić Sergi Bruguera | Montréal | Hard | July 22 | Andrei Chesnokov 3–6, 6–4, 6–3 | Petr Korda | Ivan Lendl Jim Courier | Cincinnati | Hard | August 5 | Guy Forget 2–6, 7–6(4), 6–4 | Pete Sampras | Boris Becker Jim Courier | Stockholm | Carpet (i) | October 21 | Boris Becker 3–6, 6–4, 1–6, 6–2, 6–2 | Stefan Edberg | Aaron Krickstein Jim Courier | Paris | Carpet (i) | October 28 | Guy Forget 7–6(9), 4–6, 5–7, 6–4, 6–4 | Pete Sampras | Michael Chang Jonas Svensson