After one turnover, wind up with another one (6)
In basketball, a T is a technical foul, which gives the other team two undefended foul shots plus possession (and is thus a turnover). A travel is called when a player takes steps without dribbling- another turnover.
T in this sense isn't in my Chambers, but it's very commonly used.
https://en.wikipedia.org/wiki/Technical_foul