# 1978 United Bank Tennis Classic – Singles

The 1976 United Bank Tennis Classic – Singles was an event of the 1976 United Bank Tennis Classic men's tennis tournament and was played on indoor carpet courts in Denver, Colorado in the United States, between February 20 and February 26, 1978. The draw comprised 32 players and eight of them were seeded. Björn Borg was the defending singles champion but did not compete in this edition. First-seeded Jimmy Connors won the United Bank Tennis Classic singles title by defeating fifth-seeded Stan Smith in the final, 6–2, 7–6$^{(7–2)}$.

## Seeds

* Jimmy Connors (champion)
* Manuel Orantes (second round)
* (Withdrew)
* Wojciech Fibak (quarterfinals)
* Stan Smith (final)
* Tim Gullikson (first round)
* Mark Cox (second round)
* Cliff Drysdale (second round)

## 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

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Jimmy Connors | 6 | 6 | | | | |
| LL | Geoff Masters | 2 | 4 | | | | |
| LL | Geoff Masters | 2 | 4 | 1 | Jimmy Connors | 6 | 7 |
| | | | | 5 | Stan Smith | 2 | 6 |
| 5 | Stan Smith | 6 | 7 | 5 | Stan Smith | 2 | 6 |
| | Arthur Ashe | 4 | 5 | | | | |

### Top half

| 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 |
| 1 | Jimmy Connors | 7 | 6 | | | | | | | | | | | | | | |
| | Peter Fleming | 6 | 0 | | 1 | Jimmy Connors | 6 | 6 | | | | | | | | | |
| Q | Van Winitsky | 7 | 6 | 6 | Q | Van Winitsky | 4 | 2 | | | | | | | | | |
| | Marcello Lara | 6 | 7 | 4 | | | | | | 1 | Jimmy Connors | 6 | 6 | | | | |
| | Heinz Günthardt | 6 | 6 | 7 | | | | | | | Nick Saviano | 2 | 3 | | | | |
| | Butch Walts | 7 | 2 | 6 | | Heinz Günthardt | 3 | 6 | 6 | | | | | | | | |
| | Nick Saviano | 6 | 6 | | | Nick Saviano | 6 | 3 | 7 | | | | | | | | |
| 6 | Tim Gullikson | 4 | 4 | | | | | | | | | | | 1 | Jimmy Connors | 6 | 6 |
| LL | Geoff Masters | 6 | 7 | | | | | | | | | | | LL | Geoff Masters | 2 | 4 |
| | Kim Warwick | 4 | 6 | | LL | Geoff Masters | 3 | 7 | 6 | | | | | | | | |
| | Colin Dibley | 7 | 6 | 6 | | Terry Moor | 6 | 6 | 3 | | | | | | | | |
| | Terry Moor | 6 | 7 | 7 | | | | | | LL | Geoff Masters | 6 | 6 | | | | |
| | Bob Hewitt | 6 | 3 | | | | | | | | Tom Leonard | 2 | 1 | | | | |
| | Tom Leonard | 7 | 6 | | | Tom Leonard | 7 | 6 | | | | | | | | | |
| | Brian Teacher | 1 | 7 | 4 | 7 | Mark Cox | 6 | 4 | | | | | | | | | |
| 7 | Mark Cox | 6 | 5 | 6 | | | | | | | | | | | | | |

### Bottom half

| First Round | First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Second Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | Stan Smith | 7 | 6 | | | | | | | | | | | | | | | |
| | Billy Martin | 6 | 4 | | 5 | Stan Smith | 6 | 6 | | | | | | | | | | |
| | José Higueras | 2 | 4 | | | John Lloyd | 3 | 4 | | | | | | | | | | |
| | John Lloyd | 6 | 6 | | | | | | | 5 | Stan Smith | 5 | 6 | 7 | | | | |
| Q | Douglas Palm | 6 | 7 | | | | | | | 4 | Wojciech Fibak | 7 | 4 | 6 | | | | |
| Q | Álvaro Fillol | 4 | 6 | | Q | Douglas Palm | 7 | 4 | 4 | | | | | | | | | |
| | Tom Gullikson | 3 | 5 | | 4 | Wojciech Fibak | 6 | 6 | 6 | | | | | | | | | |
| 4 | Wojciech Fibak | 6 | 7 | | | | | | | | | | | | 5 | Stan Smith | 6 | 7 |
| 8 | Cliff Drysdale | 2 | 6 | 6 | | | | | | | | | | | | Arthur Ashe | 4 | 5 |
| Q | Jan Norbäck | 6 | 2 | 3 | 8 | Cliff Drysdale | 5 | 4 | | | | | | | | | | |
| | Frew McMillan | 7 | 6 | | | Frew McMillan | 7 | 6 | | | | | | | | | | |
| | Marty Riessen | 6 | 3 | | | | | | | | Frew McMillan | 3 | 0 | | | | | |
| | Arthur Ashe | 6 | 6 | | | | | | | | Arthur Ashe | 6 | 6 | | | | | |
| | Walter Redondo | 3 | 3 | | | Arthur Ashe | 6 | 6 | | | | | | | | | | |
| | Dick Crealy | 2 | 7 | 4 | 2 | Manuel Orantes | 4 | 3 | | | | | | | | | | |
| 2 | Manuel Orantes | 6 | 6 | 6 | | | | | | | | | | | | | | |