Valdez signed a three-year, $115 million contract with the Tigers on Wednesday, Jeff Passan of ESPN.com reports.
The addition of Valdez gives the Tigers one of the most formidable left-handed starter duos in baseball, as he will now join Tarik Skubal atop Detroit's rotation. Valdez, 32, turned in a 3.66 ERA and 1.24 WHIP across 192 innings with the Astros last season. Although those ratios are some of the worst he's recorded over his eight-year career, he remains a dependable fantasy asset after making 31 starts and topping 185 strikeouts in three of the past four seasons.