1981 Toronto Molson Light Challenge
{{refimprove|date=November 2014}}
{{TennisEvent|1981|Toronto Molson Light Challenge|
| champ = {{flagicon|USA}} Vitas Gerulaitis
| runner = {{flagicon|USA}} John McEnroe
| score = 6–4, 4–6, 6–3, 6–3
| before_year = 1977
| type = no
}}
{{main|Toronto Indoor}}
Vitas Gerulaitis won the final 6–4, 4–6, 6–3, 6–3 over John McEnroe.{{cite news |url=https://news.google.com/newspapers?id=E3RkAAAAIBAJ&sjid=bn4NAAAAIBAJ&pg=2421%2C5011208 |work=Calgary Herald |agency=Canadian Press |title=Gerulaitis has ringside seat for McEnroe's net tantrums |date=February 9, 1981 |page=D7}}
Players
{{columns-list|colwidth=30em|
- {{flagicon|USA}} Vitas Gerulaitis (champion)
- {{flagicon|USA}} John McEnroe (final)
- {{flagicon|SWE}} Björn Borg (semifinals)
- {{flagicon|USA}} Jimmy Connors (semifinals)
- {{flagicon|USA}} Sandy Mayer (round-robin)
- {{flagicon|RSA}} Johan Kriek (round-robin)
- {{flagicon|POL}} Wojciech Fibak (round-robin)
- {{flagicon|ROU}} Ilie Năstase (round-robin)
}}
Draw
=Finals=
{{4TeamBracket-Tennis35
| team-width=175
| RD1-team1={{flagicon|USA}} Jimmy Connors
| RD1-score1-1=7
| RD1-score1-2=2
| RD1-score1-3=2
| RD1-team2={{flagicon|USA}} Vitas Gerulaitis
| RD1-score2-1=6
| RD1-score2-2=6
| RD1-score2-3=6
| RD1-team3={{flagicon|USA}} John McEnroe
| RD1-score3-1=6
| RD1-score3-2=3
| RD1-score3-3=7
| RD1-team4={{flagicon|SWE}} Björn Borg
| RD1-score4-1=3
| RD1-score4-2=6
| RD1-score4-3=6
| RD2-team1={{flagicon|USA}} Vitas Gerulaitis
| RD2-score1-1=6
| RD2-score1-2=4
| RD2-score1-3=6
| RD2-score1-4=6
| RD2-team2={{flagicon|USA}} John McEnroe
| RD2-score2-1=4
| RD2-score2-2=6
| RD2-score2-3=3
| RD2-score2-4=3
}}
=Group A=
{{4TeamRR-TennisWide
| title-1=
| title-2=RR W–L
| title-3=Set W–L
| title-4=Game W–L
| title-5=Standings
| team-1-abbrev={{flagicon|USA}} Jimmy Connors
| team-1={{flagicon|USA}} Jimmy Connors
| match-w/l-1=3-0
| set-w/l-1=6-0
| game-w/l-1=37-21
| standings-1=1
| team-2-abbrev={{flagicon|SWE}} Björn Borg
| team-2={{flagicon|SWE}} Björn Borg
| match-w/l-2=2-1
| set-w/l-2=4-4
| game-w/l-2=40-38
| standings-2=2
| team-3-abbrev={{flagicon|USA}} Sandy Mayer
| team-3={{flagicon|USA}} Sandy Mayer
| match-w/l-3=1–2
| set-w/l-3=3-5
| game-w/l-3=35-39
| standings-3=3
| team-4-abbrev={{flagicon|POL}} Wojciech Fibak
| team-4={{flagicon|POL}} Wojciech Fibak
| match-w/l-4=0–3
| set-w/l-4=2-6
| game-w/l-4=32-46
| standings-4=4
|color-row-1= | 1v2=7-5, 6–3 {{cite web | url=https://www.nytimes.com/1981/02/07/sports/connors-defeats-borg.html | title=NY Times 'Connors Defeats Borg' | accessdate=22 November 2014}} |1v3=6–4, 6–2 |1v4=6–3, 6–4
|color-row-2= |2v1=5–7, 3–6 | 2v3=6–4, 3–6, 6–2 |2v4=6–3, 5–7, 6–3
|color-row-3= |3v1=4–6, 2–6 |3v2=4–6, 6–3, 2–6 | 3v4=5–7, 6–3, 6–2
|color-row-4= |4v1=3–6, 4–6 |4v2=3–6, 7–5, 3–6 |4v3=7–5, 3–6, 2–6
}}
=Group B=
{{4TeamRR-TennisWide
| title-1=
| title-2=RR W–L
| title-3=Set W–L
| title-4=Game W–L
| title-5=Standings
| team-1-abbrev={{flagicon|USA}} John McEnroe
| team-1={{flagicon|USA}} John McEnroe
| match-w/l-1=3-0
| set-w/l-1=6-1
| game-w/l-1=39-20
| standings-1=1
| team-2-abbrev={{flagicon|USA}} Vitas Gerulaitis
| team-2={{flagicon|USA}} Vitas Gerulaitis
| match-w/l-2=2-1
| set-w/l-2=4-3
| game-w/l-2=34-27
| standings-2=2
| team-3-abbrev={{flagicon|RSA}} Johan Kriek
| team-3={{flagicon|RSA}} Johan Kriek
| match-w/l-3=1–2
| set-w/l-3=4-4
| game-w/l-3=37-39
| standings-3=3
| team-4-abbrev={{flagicon|ROU}} Ilie Năstase
| team-4={{flagicon|ROU}} Ilie Năstase
| match-w/l-4=0–3
| set-w/l-4=0-6
| game-w/l-4=12-36
| standings-4=4
|color-row-1= | 1v2=6-3, 6–3 |1v3=6–4, 3–6, 6–3 |1v4=6–1, 2-0 Def
|color-row-2= |2v1=3–6, 3–6 | 2v3=6–3, 4–6, 6–3 |2v4=6–1, 6–2
|color-row-3= |3v1=4–6, 6–3, 3–6| 3v2=3–6, 6–4, 3–6 | 3v4=6–4, 6–4
|color-row-4= |4v1=1–6, 0–2 Def |4v2=1–6, 2–6 |4v3=4–6, 4–6}}