The 31-year-old Ott, who was acquired in the Ryan Miller deal from Buffalo, had three assists and 37 penalty minutes in 23 regular-season games. In six playoff games, he added two assists and 14 penalty minutes.
Ott had been the Sabres captain before the trade on Feb. 28. He's an 11-year veteran and former 2000 first-round pick of the Stars.
I'm very excited about what happened today. We've worked on this deal with Toronto for a month, or over a month. It got a little bit of legs on draft day, but it really heated up last night, and we were able to complete the deal today.
— Penguins GM Jim Rutherford on Phil Kessel, who he acquired from the Maple Leafs in a trade on Wednesday