"I'm real excited to go out there and compete again," said the 25-year-old Paxton, who is 5-0 with a 1.75 ERA in six career starts. "It's been a long road, but I'm just really excited to be back up here."
Paxton insists those nerves won't be a hindrance.
"It's funny. I'm always nervous and excited before I pitch," Paxton said. "That's just the way it is. And I love that feeling. I feel like being nervous makes me better, makes me focus more. I'm just excited to get back out there and get that feeling and pitch again."
Manager Lloyd McClendon is eager to have the lanky lefty back in his rotation as well, after seeing Paxton go 2-0 with a 2.25 ERA in his first two starts against the Angels in early April.
"If he comes back and pitches the way he did out of the gate, it'll be a tremendous lift for the ballclub," McClendon said. "Obviously he's been missed, because he was dominating. People forget this guy was throwing 99 mph, and he's [6-foot-4] with a long arm span. It'll be nice to have him back."
The Mariners will need to make a roster move to open a spot both on the 25- and 40-man rosters to add Paxton. McClendon indicated it's unlikely the club will go with 13 pitchers, so that means someone from the eight-man bullpen will need to be optioned.
Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB as well as his Mariners Musings blog. This story was not subject to the approval of Major League Baseball or its clubs.