29‑Aug‑1973 | US Open | Grass | R128 | 69 | | George Hardie [USA] d. Froehling | 3-6 7-6 6-2 6-4 | | | | | | | | | |
30‑Aug‑1972 | US Open | Grass | R128 | | | Onny Parun [NZL] d. Froehling | 4-6 6-4 6-3 6-2 | | | | | | | | | |
1‑Sep‑1971 | US Open | Grass | QF | | | Jan Kodes [CZE] d. Froehling | 6-0 7-6 6-3 | | | | | | | | | |
1‑Sep‑1971 | US Open | Grass | R16 | | | Froehling d. Bob Carmichael [AUS] | 7-6 6-4 6-4 | | | | | | | | | |
1‑Sep‑1971 | US Open | Grass | R32 | | | Froehling d. Roscoe Tanner [USA] | 7-6 5-7 6-3 7-6 | | | | | | | | | |
1‑Sep‑1971 | US Open | Grass | R64 | | | Froehling d. Andrew Pattison [USA] | 7-5 4-6 6-7 6-3 6-4 | | | | | | | | | |
1‑Sep‑1971 | US Open | Grass | R128 | | | Froehling d. Jurgen Fassbender [GER] | 6-3 6-3 6-3 | | | | | | | | | |
2‑Sep‑1970 | US Open | Grass | R64 | | | Jim Osborne [USA] d. Froehling | 7-6 6-3 6-4 | | | | | | | | | |
2‑Sep‑1970 | US Open | Grass | R128 | | | Froehling d. Dick Crealy [AUS] | 6-4 3-6 7-6 4-6 6-2 | | | | | | | | | |
30‑Aug‑1967 | US Open | Grass | R32 | | | Jan Leschly [DEN] d. Froehling | 4-6 6-3 11-9 6-4 | | | | | | | | | |
30‑Aug‑1967 | US Open | Grass | R64 | | | Froehling d. Dick Knight [USA] | 6-4 3-6 6-2 7-5 | | | | | | | | | |
30‑Aug‑1967 | US Open | Grass | R128 | | | Froehling d. Ed Rubinoff [USA] | 7-5 6-3 7-5 | | | | | | | | | |
1‑Aug‑1966 | US Open | Grass | R32 | | | Ray Ruffels [AUS] d. Froehling | 3-6 10-8 6-4 6-3 | | | | | | | | | |
1‑Aug‑1966 | US Open | Grass | R64 | | | Froehling d. Peter Van Lingen [RSA] | 6-1 6-1 6-2 | | | | | | | | | |
1‑Aug‑1966 | US Open | Grass | R128 | | | Froehling d. Bill Tully [USA] | 6-3 6-3 6-1 | | | | | | | | | |
3‑Sep‑1965 | US Open | Grass | R32 | | | Dennis Ralston [USA] d. Froehling | 7-5 4-6 6-3 6-3 | | | | | | | | | |
3‑Sep‑1965 | US Open | Grass | R64 | | | Froehling d. John Pickens [USA] | 6-3 6-0 5-7 3-6 6-3 | | | | | | | | | |
3‑Sep‑1965 | US Open | Grass | R128 | | | Froehling d. Bailey Brown [USA] | 7-5 6-3 6-3 | | | | | | | | | |
2‑Sep‑1964 | US Open | Grass | R128 | | | Tony Roche [AUS] d. Froehling | 6-3 6-3 6-4 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | F | | | Rafael Osuna [MEX] d. Froehling | 7-5 6-4 6-2 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | SF | | | Froehling d. Ronnie Barnes [BRA] | 6-3 6-1 6-4 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | QF | | | Froehling d. Robert Wilson [GBR] | 6-8 4-6 6-3 6-3 9-7 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | R16 | | | Froehling d. Roy Emerson [AUS] | 6-4 4-6 9-7 6-2 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | R32 | | | Froehling d. Tony Palafox [MEX] | 6-4 6-1 6-4 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | R64 | | | Froehling d. Dave Reed [USA] | 7-9 8-6 6-3 6-4 | | | | | | | | | |
28‑Aug‑1963 | US Open | Grass | R128 | | | Froehling d. Hugh West Sweeney [USA] | 6-1 6-3 6-2 | | | | | | | | | |
31‑Aug‑1962 | US Open | Grass | QF | | | Rod Laver [AUS] d. Froehling | 6-3 13-11 4-6 6-3 | | | | | | | | | |
31‑Aug‑1962 | US Open | Grass | R16 | | | Froehling d. Ron Holmberg [USA] | 8-10 7-5 6-4 6-3 | | | | | | | | | |
31‑Aug‑1962 | US Open | Grass | R32 | | | Froehling d. Cliff Drysdale [RSA] | 6-0 6-4 6-3 | | | | | | | | | |
31‑Aug‑1962 | US Open | Grass | R64 | | | Froehling d. Bill Wright [USA] | 8-6 6-2 17-15 | | | | | | | | | |
31‑Aug‑1962 | US Open | Grass | R128 | | | Froehling d. Larry Nagler [USA] | 6-1 5-7 6-2 3-6 6-2 | | | | | | | | | |
28‑Aug‑1961 | US Open | Grass | R32 | | | Donald Dell [USA] d. Froehling | 11-9 10-8 6-1 | | | | | | | | | |
28‑Aug‑1961 | US Open | Grass | R64 | | | Froehling d. Charlie Pasarell [USA] | 6-3 6-4 6-4 | | | | | | | | | |
28‑Aug‑1961 | US Open | Grass | R128 | | | Froehling d. Dever Hobbs [USA] | 6-2 6-2 6-4 | | | | | | | | | |
2‑Sep‑1960 | US Open | Grass | R32 | | | Ron Holmberg [USA] d. Froehling | 6-4 6-3 6-2 | | | | | | | | | |
2‑Sep‑1960 | US Open | Grass | R64 | | | Froehling d. Ed Dailey [USA] | 4-6 6-1 7-5 6-4 | | | | | | | | | |
2‑Sep‑1960 | US Open | Grass | R128 | | | Froehling d. Straight Clark [USA] | 15-13 6-1 8-6 | | | | | | | | | |
6‑Sep‑1959 | US Open | Grass | R64 | | | Rod Laver [AUS] d. Froehling | 6-4 6-0 6-2 | | | | | | | | | |
6‑Sep‑1959 | US Open | Grass | R128 | | | Froehling d. Don Thompson [USA] | 6-1 6-2 2-6 7-5 | | | | | | | | | |
1‑Aug‑1958 | US Open | Grass | R128 | | | Rod Laver [AUS] d. Froehling | 6-2 6-3 7-5 | | | | | | | | | |