Three-time Pro Bowl center Frank Ragnow sustained a partially torn pectoral muscle during the Detroit Lions’ 20-13 win over the Arizona Cardinals on Sunday.Ragnow, however, is intent on playing in the Lions’ next game on Monday against the visiting Seattle Seahawks, coach Dan Campbell said on 97.1 The Ticket in Southfield, Mich.”First of all, Frank is stubborn. He’s hard-headed Frank. He’s tough, he’s stubborn, so he wants to go, and he always wants to go, but this is something we’re still talking about right now,” Campbell said. “I’m not entirely sure what we’re gonna do with him.”Campbell said Ragnow played through the injury while lining up for all 68 offensive snaps against the Cardinals.