Walker agreed to a four-year, $72 million contract with the Phillies on Tuesday, Jeff Passan of ESPN.com reports.
Walker posted a 3.49 ERA, 1.19 WHIP and 132:45 K:BB across 157.1 innings for the Mets last season, and he'll remain in the NL East for the foreseeable future as he makes his way to Philadelphia. The 30-year-old will slot in behind aces Zack Wheeler and Aaron Nola to bolster the Phillies' already strong rotation.