BALTIMORE (AP) _ The Baltimore Orioles fortified their shaky starting rotation Tuesday by signing former AL Cy Young Award winner Pat Hentgen.

Hentgen, 32, went 15-12 with a 4.72 ERA in 33 starts with the St. Louis Cardinals this year. He struck out 118 and allowed 89 walks in 194 1-3 innings.

It was the first significant free-agent signing for the Orioles, who earlier lost ace Mike Mussina to the New York Yankees. He joins a rotation that previously had only two solid starters: Jose Mercedes and Sidney Ponson.

Hentgen won the AL Cy Young Award in 1996 while with the Toronto Blue Jays, when he went 20-10 with a 3.22 ERA. He has a 120-88 career record.