26‑Sep‑1975 | Davis Cup WG PR: IND vs THA | | RR | | | Krishnan d. Pichet Boratisa [THA] | 6-4 6-1 4-6 6-3 | | | | | | | | | |
10‑May‑1969 | Davis Cup EUR F: IND vs JPN | | RR | | | Krishnan d. Ichizo Konishi [JPN] | 6-2 6-4 6-4 | | | | | | | | | |
25‑Mar‑1969 | Davis Cup WG F: SRI vs IND | Clay | RR | | | Krishnan d. Senaka Kumara [SRI] | 6-0 6-0 6-0 | | | | | | | | | |
1‑Mar‑1969 | Davis Cup G1 SF: MAS vs IND | | RR | | | Krishnan d. Billy Yap [MAS] | 6-2 6-3 6-1 | | | | | | | | | |
9‑Nov‑1968 | Davis Cup WG F: USA vs IND | Hard | RR | | | Krishnan d. Clark Graebner [USA] | 7-5 4-6 6-2 6-1 | | | | | | | | | |
9‑Nov‑1968 | Davis Cup WG F: USA vs IND | Hard | RR | | | Arthur Ashe [USA] d. Krishnan | 6-1 6-3 6-3 | | | | | | | | | |
4‑Oct‑1968 | Davis Cup EUR SF: FRG vs IND | | RR | | | Wilhelm Bungert [GER] d. Krishnan | 4-6 6-0 8-6 7-5 | | | | | | | | | |
4‑Oct‑1968 | Davis Cup EUR SF: FRG vs IND | | RR | | | Krishnan d. Ingo Buding [GER] | 6-2 7-5 6-2 | | | | | | | | | |
21‑Sep‑1968 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Koji Watanabe [JPN] | 6-2 3-6 6-3 6-2 | | | | | | | | | |
21‑Sep‑1968 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Keishiro Yanagi [JPN] | 6-4 6-3 6-1 | | | | | | | | | |
10‑Nov‑1967 | Davis Cup WG SF: IND vs RSA | Clay | RR | | | Bob Hewitt [RSA] d. Krishnan | 3-6 6-3 6-2 2-6 8-6 | | | | | | | | | |
10‑Nov‑1967 | Davis Cup WG SF: IND vs RSA | Clay | RR | | | Cliff Drysdale [RSA] d. Krishnan | 7-5 6-4 3-6 6-3 | | | | | | | | | |
26‑Dec‑1966 | Davis Cup WG CR: AUS vs IND | Grass | RR | | | Fred Stolle [AUS] d. Krishnan | 6-3 6-2 6-4 | | | | | | | | | |
26‑Dec‑1966 | Davis Cup WG CR: AUS vs IND | Grass | RR | | | Roy Emerson [AUS] d. Krishnan | 6-0 6-2 10-8 | | | | | | | | | |
4‑Dec‑1966 | Davis Cup EUR F: IND vs BRA | | RR | | | Krishnan d. Jose Edison Mandarino [BRA] | 5-7 6-2 6-2 6-3 | | | | | | | | | |
4‑Dec‑1966 | Davis Cup EUR F: IND vs BRA | | RR | | | Krishnan d. Thomaz Koch [BRA] | 3-6 6-4 10-12 7-5 6-2 | | | | | | | | | |
12‑Nov‑1966 | Davis Cup EUR SF: IND vs FRG | | RR | | | Krishnan d. Wilhelm Bungert [GER] | 7-5 7-5 6-4 | | | | | | | | | |
30‑Sep‑1966 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Osamu Ishiguro [JPN] | 6-3 2-6 6-2 10-8 | | | | | | | | | |
30‑Sep‑1966 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Koji Watanabe [JPN] | 6-2 7-5 6-0 | | | | | | | | | |
5‑Nov‑1965 | Davis Cup EUR F: ESP vs IND | Clay | RR | | | Krishnan d. Juan Gisbert [ESP] | 6-2 6-0 6-1 | | | | | | | | | |
5‑Nov‑1965 | Davis Cup EUR F: ESP vs IND | Clay | RR | | | Manuel Santana [ESP] d. Krishnan | 6-3 6-3 6-3 | | | | | | | | | |
1‑Oct‑1965 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Osamu Ishiguro [JPN] | 6-4 6-2 6-2 | | | | | | | | | |
1‑Oct‑1965 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Koji Watanabe [JPN] | 8-6 6-2 9-7 | | | | | | | | | |
2‑Nov‑1963 | Davis Cup WG F: IND vs USA | | RR | | | Dennis Ralston [USA] d. Krishnan | 6-4 6-1 13-11 | | | | | | | | | |
2‑Nov‑1963 | Davis Cup WG F: IND vs USA | | RR | | | Chuck Mckinley [USA] d. Krishnan | 10-8 6-8 6-2 2-6 6-0 | | | | | | | | | |
3‑May‑1963 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Atsushi Miyagi [JPN] | 7-5 4-6 6-0 6-0 | | | | | | | | | |
3‑May‑1963 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Osamu Ishiguro [JPN] | 6-2 7-5 | | | | | | | | | |
19‑Apr‑1963 | Davis Cup G1 SF: MAS vs IND | | RR | | | Krishnan d. Sultan Aman Azman [MAS] | 6-1 6-1 6-0 | | | | | | | | | |
31‑Mar‑1963 | Davis Cup EUR QF: IND vs PAK | | RR | | | Krishnan d. Sheikh Qutubuddin [PAK] | 6-0 6-3 6-0 | | | | | | | | | |
3‑Dec‑1962 | Davis Cup G1 F: IND vs MEX | | RR | | | Rafael Osuna [MEX] d. Krishnan | 8-6 2-6 7-5 6-8 6-4 | | | | | | | | | |
4‑May‑1962 | Davis Cup EUR F: IND vs PHI | | RR | | | Krishnan d. Felicisimo Ampon [PHI] | 6-1 8-6 6-1 | | | | | | | | | |
31‑Mar‑1962 | Davis Cup EUR QF: PAK vs IND | | RR | | | Krishnan d. Khwaja Saeed Hai [PAK] | 6-4 6-2 6-2 | | | | | | | | | |
30‑Sep‑1961 | Davis Cup WG SF: IND vs USA | | RR | | | Krishnan d. Whitney Reed [USA] | 6-4 6-1 7-5 | | | | | | | | | |
30‑Sep‑1961 | Davis Cup WG SF: IND vs USA | | RR | | | Krishnan d. Chuck Mckinley [USA] | 6-3 4-6 1-6 6-3 6-4 | | | | | | | | | |
6‑May‑1961 | Davis Cup EUR F: IND vs JPN | | RR | | | Krishnan d. Osamu Ishiguro [JPN] | 4-6 6-3 6-3 6-3 | | | | | | | | | |
6‑May‑1961 | Davis Cup EUR F: IND vs JPN | | RR | | | Krishnan d. Atsushi Miyagi [JPN] | 6-4 6-1 6-4 | | | | | | | | | |
1‑Apr‑1961 | Davis Cup WG SF: IND vs THA | | RR | | | Krishnan d. Seri Charuchinda [THA] | 6-0 6-3 6-1 | | | | | | | | | |
26‑Mar‑1961 | Davis Cup G1 QF: INA vs IND | | RR | | | Krishnan d. Itjas Sumarno [INA] | 6-2 6-1 6-1 | | | | | | | | | |
27‑May‑1960 | Davis Cup EUR F: PHI vs IND | | RR | | | Felicisimo Ampon [PHI] d. Krishnan | 6-3 8-6 6-1 | | | | | | | | | |
4‑Apr‑1960 | Davis Cup WG QF: SRI vs IND | Clay | RR | | | Krishnan d. David Nevins Selvadurai [SRI] | 6-0 6-0 6-1 | | | | | | | | | |
4‑Apr‑1960 | Davis Cup WG QF: SRI vs IND | Clay | RR | | | Krishnan d. Bernard Pinto [SRI] | 6-3 6-2 6-2 | | | | | | | | | |
14‑Aug‑1959 | Davis Cup AME F: AUS vs IND | Grass | RR | | | Krishnan d. Rod Laver [AUS] | 6-1 6-4 8-10 6-4 | | | | | | | | | |
14‑Aug‑1959 | Davis Cup AME F: AUS vs IND | Grass | RR | | | Neale Fraser [AUS] d. Krishnan | 6-2 6-3 6-4 | | | | | | | | | |
1‑Jun‑1959 | Davis Cup EUR F: IND vs PHI | | RR | | | Krishnan d. Felicisimo Ampon [PHI] | 6-2 6-2 6-3 | | | | | | | | | |
1‑Jun‑1959 | Davis Cup EUR F: IND vs PHI | | RR | | | Krishnan d. Juan Maria Jose [PHI] | 6-1 6-4 6-1 | | | | | | | | | |
1‑May‑1959 | Davis Cup EUR SF: JPN vs IND | | RR | | | Krishnan d. Susumu Matsuura [JPN] | 6-2 6-4 6-4 | | | | | | | | | |
1‑May‑1959 | Davis Cup EUR SF: JPN vs IND | | RR | | | Krishnan d. Kosei Kamo [JPN] | 3-6 6-2 6-0 7-5 | | | | | | | | | |
15‑May‑1958 | Davis Cup EUR R2: ITA vs IND | Clay | RR | | | Orlando Sirola [ITA] d. Krishnan | 2-6 7-5 6-3 6-3 | | | | | | | | | |
15‑May‑1958 | Davis Cup EUR R2: ITA vs IND | Clay | RR | | | Krishnan d. Antonio Maggi [ITA] | 6-0 2-6 6-4 6-2 | | | | | | | | | |
25‑Apr‑1958 | Davis Cup EUR R1: MON vs IND | | RR | | | Krishnan d. Georges Pasquier [MON] | 6-0 6-1 6-0 | | | | | | | | | |
25‑Apr‑1958 | Davis Cup EUR R1: MON vs IND | | RR | | | Krishnan d. Roland Borghini [MON] | 5-7 6-3 6-2 6-0 | | | | | | | | | |
26‑Apr‑1957 | Davis Cup EUR SF: PHI vs IND | | RR | | | Raymundo Deyro [PHI] d. Krishnan | 4-6 6-2 2-6 6-4 6-3 | | | | | | | | | |
26‑Apr‑1957 | Davis Cup EUR SF: PHI vs IND | | RR | | | Krishnan d. Juan Maria Jose [PHI] | 6-2 6-4 6-2 | | | | | | | | | |
1‑Mar‑1957 | Davis Cup G1 QF: IND vs MAS | | RR | | | Krishnan d. Chew Bee Ong [MAS] | 6-2 6-4 6-1 | | | | | | | | | |
14‑Dec‑1956 | Davis Cup WG F: USA vs IND | Grass | RR | | | Herb Flam [USA] d. Krishnan | 7-5 4-6 10-8 2-6 6-4 | | | | | | | | | |
14‑Dec‑1956 | Davis Cup WG F: USA vs IND | Grass | RR | | | Krishnan d. Mike Green [USA] | 7-5 6-4 6-4 | | | | | | | | | |
18‑May‑1956 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Atsushi Miyagi [JPN] | 6-3 6-0 6-3 | | | | | | | | | |
18‑May‑1956 | Davis Cup EUR F: JPN vs IND | | RR | | | Krishnan d. Kosei Kamo [JPN] | 6-8 6-3 6-4 7-5 | | | | | | | | | |
22‑Mar‑1956 | Davis Cup WG SF: SRI vs IND | Clay | RR | | | Krishnan d. Percy Ernst [SRI] | 6-0 6-1 6-2 | | | | | | | | | |
22‑Mar‑1956 | Davis Cup WG SF: SRI vs IND | Clay | RR | | | Krishnan d. Koo De Saram [SRI] | 6-1 6-1 6-2 | | | | | | | | | |
9‑Jun‑1955 | Davis Cup EUR QF: GBR vs IND | Grass | RR | | | Krishnan d. Tony Mottram [GBR] | 6-4 6-0 6-2 | | | | | | | | | |
9‑Jun‑1955 | Davis Cup EUR QF: GBR vs IND | Grass | RR | | | Roger Becker [GBR] d. Krishnan | 13-11 6-3 6-3 | | | | | | | | | |
13‑May‑1955 | Davis Cup EUR R2: EGY vs IND | | RR | | | Krishnan d. Ibrahim Badreldin Sayed [EGY] | 6-0 6-2 6-2 | | | | | | | | | |
13‑May‑1955 | Davis Cup EUR R2: EGY vs IND | | RR | | | Krishnan d. Adly Shafei [EGY] | 6-1 9-7 6-3 | | | | | | | | | |
11‑Jun‑1954 | Davis Cup EUR QF: FRA vs IND | Clay | RR | | | Robert Haillet [FRA] d. Krishnan | 6-4 6-4 8-6 | | | | | | | | | |
11‑Jun‑1954 | Davis Cup EUR QF: FRA vs IND | Clay | RR | | | Krishnan d. Jean Claude Molinari [FRA] | 6-4 6-4 6-2 | | | | | | | | | |
14‑May‑1954 | Davis Cup EUR R2: AUT vs IND | | RR | | | Krishnan d. Franz Saiko [AUT] | 6-0 6-2 7-5 | | | | | | | | | |
3‑Dec‑1953 | Davis Cup EUR SF: BEL vs IND | Grass | RR | | | Jackie Brichant [BEL] d. Krishnan | 3-6 3-6 6-4 6-3 6-0 | | | | | | | | | |
3‑Dec‑1953 | Davis Cup EUR SF: BEL vs IND | Grass | RR | | | Philippe Washer [BEL] d. Krishnan | 6-1 6-1 6-1 | | | | | | | | | |