Conversation so far:
When did Bart Starr begin with the Packers?
Starr began as a backup to Tobin Rote in 1956.
Did he play in any games?
In that season, Lombardi pulled starter Lamar McHan in favor of Starr.
Was he a successful player?
he held the starting job henceforth.
did he have any other role in the team?
Starr was named the NFL's Most Valuable Player by the Associated Press (AP).

Question: what teams did he play against?
Self-contained rewrite: what teams did Bart Starr play against?