Conversation so far:
when did Steve Carlton's career begin with the phillies?
he was traded to the Philadelphia Phillies before the 1972 season for pitcher Rick Wise.
Which team had he played with before this/?
Cardinals.
What was his record like before he joined the phillies?
Was he traded because he was good or bad?
Carlton had won 77 games to Wise's 75, and both were considered among the game's best pitchers.
What was his ERA?
ERA (1.97).
What other stats can be attributed to Carlton?
first season with Philadelphia, he led the league in wins (27), complete games (30), strikeouts (310).
What was his second season like?
CANNOTANSWER.
how long did he play on the philies?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Some highlights of Carlton's 1972 season included starting the season with 5 wins and 1 loss.
Did he have any other accomplishments during his tenure?
At this point he began a 15-game winning streak.

Question: When did his streak end?
Self-contained rewrite: When did Steve Carlton's streak end?