Rusney Castillo's pain in left side 'nothing serious'

It appears as though Rusney Castillo has avoided the dreaded spring training injury bug, at least for now.

The Boston Red Sox outfielder underwent a medical evaluation for a pain in his left side early Wednesday and told reporters, "Thankfully it's nothing serious."

Castillo, who went 1-for-3 in in the Red Sox's 1-0 victory over Boston College on Monday, expects to play Thursday versus the Minnesota Twins.

The Cuban is the front-runner to lock down the starting center field job after inking a seven-year, $72.5-million contract last year.