# 1978 BMW Challenge – Singles

Virginia Ruzici won the singles title at the 1978 BMW Challenge tennis tournament, defeating Betty Stöve in the final 5–7, 6–2, 7–5, winning her 5th title on the WTA Tour.

## Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
* Chris Evert (semifinals)
* Virginia Wade (quarterfinals)
* Betty Stöve (final)
* Kerry Reid (semifinals)
* Virginia Ruzici (champion)
* Marita Redondo (first round)
* Regina Maršíková (first round)
* Mima Jaušovec (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking
| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | C Evert | 5 | 6 | 6 | | | | | | | | | | | | | | | | | | |
| | R Blount | 7 | 1 | 3 | 1 | C Evert | 6 | 6 | | | | | | | | | | | | | | |
| | J Russell | 6 | 6 | 6 | | J Russell | 0 | 2 | | | | | | | | | | | | | | |
| Q | B Cuypers | 4 | 7 | 4 | | | | | | 1 | C Evert | 6 | 6 | | | | | | | | | |
| | S Hanika | 7 | 6 | | | | | | | | S Hanika | 3 | 4 | | | | | | | | | |
| WC | M Tyler | 5 | 4 | | | S Hanika | 6 | 6 | | | | | | | | | | | | | | |
| LL | K Glancy | 6 | 6 | | LL | K Glancy | 1 | 1 | | | | | | | | | | | | | | |
| 7 | R Maršíková | 1 | 2 | | | | | | | | | | | 1 | C Evert | | | | | | | |
| 3 | B Stöve | 6 | 6 | | | | | | | | | | | 3 | B Stöve | w/o | | | | | | |
| | E Ekblom | 1 | 3 | | 3 | B Stöve | 6 | 6 | | | | | | | | | | | | | | |
| | A Hobbs | 6 | 3 | 3 | | A Hobbs | 2 | 3 | | | | | | | | | | | | | | |
| | G Coles | 1 | 6 | 6 | | | | | | 3 | B Stöve | 6 | 6 | | | | | | | | | |
| | S Barker | 6 | 6 | Ret | | | | | | Q | N Bohm | 1 | 2 | | | | | | | | | |
| WC | M Simionescu | 4 | 7 | 1 | | M Simionescu | 3 | 6 | 0 | | | | | | | | | | | | | |
| Q | N Bohm | 6 | 6 | | 5 | N Bohm | 6 | 1 | 6 | | | | | | | | | | | | | |
| 6 | M Redondo | 4 | 0 | | | | | | | | | | | | | | | 1 | Betty Stöve | 7 | 2 | 5 |
| 8 | M Jaušovec | 6 | 6 | | | | | | | | | | | | | | | 8 | Virginia Ruzici | 5 | 6 | 7 |
| | J Evert | 0 | 2 | | 8 | M Jaušovec | 6 | 6 | | | | | | | | | | | | | | |
| | H Eisterlehner | 6 | 4 | 3 | | T Zwaan | 2 | 4 | | | | | | | | | | | | | | |
| Q | T Zwaan | 1 | 6 | 6 | | | | | | 8 | M Jaušovec | 3 | 4 | | | | | | | | | |
| | T Harford | 7 | 3 | 7 | | | | | | 4 | K Reid | 6 | 6 | | | | | | | | | |
| | B Nagelsen | 5 | 6 | 5 | | T Harford | 3 | 3 | | | | | | | | | | | | | | |
| | I Kloss | 6 | 3 | | 4 | K Reid | 6 | 6 | | | | | | | | | | | | | | |
| 4 | K Reid | 7 | 6 | | | | | | | | | | | 4 | K Reid | 5 | 4 | | | | | |
| 5 | V Ruzici | 6 | 6 | | | | | | | | | | | 5 | V Ruzici | 7 | 6 | | | | | |
| | S Walsh | 4 | 0 | | 5 | V Ruzici | 6 | 6 | | | | | | | | | | | | | | |
| | B Thompson | 7 | 4 | 6 | | B Thompson | 0 | 3 | | | | | | | | | | | | | | |
| | M Gurdal | 6 | 7 | 3 | | | | | | 5 | V Ruzici | 6 | 6 | | | | | | | | | |
| | C Molesworth | 3 | 1 | | | | | | | 2 | V Wade | 3 | 4 | | | | | | | | | |
| | L Hunt | 6 | 6 | | | L Hunt | 2 | 4 | | | | | | | | | | | | | | |
| | J Durie | 4 | 0 | | 2 | V Wade | 6 | 6 | | | | | | | | | | | | | | |
| 2 | V Wade | 6 | 6 | | | | | | | | | | | | | | | | | | | |