MESA, Ariz. -- David Robertson smiled as he joked around with Michael Hermosillo during a live batting practice session on an unseasonably cool day in Arizona.
If the Cubs veteran reliever was at all worried about ramping up in time for Opening Day, it was hard to tell.
Robertson is back in camp with Chicago after going home to be with his wife, Erin, for the birth of their third child. The right-hander, who turns 37 on April 9, threw about 25 pitches to Hermosillo and minor league outfielder Cole Roederer on Tuesday.