Conversation so far:
When did Roger Clemens return to the Yankees?
Roger Clemens unexpectedly appeared in the owner's box at Yankee Stadium on May 6, 2007 and made a brief statement to return.
How did Roger Clemens pitch for the Yankees?
Roger Clemens made his 2007 return on June 9, defeating the Pittsburgh Pirates by pitching six innings with seven strikeouts and 3 runs allowed.
What was Roger Clemens' contract terms with his return to the Yankees?
Over the contract life, Roger Clemens would make $18.7 million.
Who were some of Roger Clemens' teammates in his return to the Yankees?
Some of Roger Clemens' teammates include: Paul O'Neill, Andy Pettitte, and Jason Giambi .
Did Roger Clemens make a statement about coming to the Yankees?
At Yankee Stadium on May 6, 2007, during the seventh-inning stretch Roger Clemens made a brief statement announcing his return.
Did anyone else make a statement regarding Roger Clemens' return besides him?

Question: How many seasons did he play?
Self-contained rewrite: How many seasons did Roger Clemens play with his return to the Yankees?