17‑Aug‑1970 | Merion | Grass | R32 | | | Frew Mcmillan [RSA] d. Koudelka | 5-7 6-4 6-4 | | | | | | | | | |
17‑Aug‑1970 | Merion | Grass | R64 | | | Koudelka d. Lamar Roemer [USA] | 5-7 6-3 6-3 | | | | | | | | | |
27‑Jul‑1970 | Indianapolis | Clay | R32 | | | Patricio Cornejo [CHI] d. Koudelka | 6-2 4-6 6-1 | | | | | | | | | |
27‑Jul‑1970 | Indianapolis | Clay | R32 | | | Patricio Cornejo [CHI] d. Koudelka | 6-2 4-6 6-1 | | | | | | | | | |
27‑Jul‑1970 | Indianapolis | Clay | R64 | | | Koudelka d. Pancho Guzman [ECU] | 7-5 6-1 | | | | | | | | | |
27‑Jul‑1970 | Indianapolis | Clay | R64 | | | Koudelka d. Pancho Guzman [ECU] | 7-5 6-1 | | | | | | | | | |
20‑Jul‑1970 | Cincinnati | Clay | R64 | | | Roy Barth [USA] d. Koudelka | 8-6 6-2 | | | | | | | | | |
18‑Jul‑1970 | Washington | Hard | R32 | | | Ion Tiriac [ROU] d. Koudelka | 7-5 6-3 | | | | | | | | | |
18‑Jul‑1970 | Washington | Hard | R64 | | | Koudelka d. Erik Van Dillen [USA] | 5-7 7-5 6-1 | | | | | | | | | |
22‑Jun‑1970 | Wimbledon | Grass | R64 | | | Terry Ryan [RSA] d. Koudelka | 4-6 6-2 6-4 3-6 6-3 | | | | | | | | | |
22‑Jun‑1970 | Wimbledon | Grass | R128 | | | Koudelka d. Szabolcz Baranyi [HUN] | 7-5 6-3 6-2 | | | | | | | | | |
15‑Jun‑1970 | Queen's Club | Grass | R32 | | | Bob Lutz [USA] d. Koudelka | 6-3 6-4 | | | | | | | | | |
15‑Jun‑1970 | Queen's Club | Grass | R64 | | | Koudelka d. Koji Watanabe [JPN] | 6-4 7-5 | | | | | | | | | |
26‑May‑1970 | Roland Garros | Clay | R32 | | | (7)Jan Kodes [CZE] d. Koudelka | 6-0 6-1 6-2 | | | | | | | | | |
26‑May‑1970 | Roland Garros | Clay | R64 | | | Koudelka d. Hans Kary [AUT] | W/O | | | | | | | | | |
26‑May‑1970 | Roland Garros | Clay | R128 | | | Koudelka d. Danny Obryant [USA] | 6-1 6-1 6-2 | | | | | | | | | |
12‑May‑1970 | Brussels | Clay | R32 | | | Cliff Richey [USA] d. Koudelka | 6-4 7-5 | | | | | | | | | |
13‑Apr‑1970 | Monte Carlo | Clay | R64 | | | Pierre Barthes [FRA] d. Koudelka | 9-7 6-4 | | | | | | | | | |