Roger Clemens' son took the Rocket deep on his first real pitch of spring training, crushing a trademark fastball over the left-field fence.

"That was probably one of the harder fastballs I cut loose," Clemens said after throwing to son Koby and other Houston Astros minor leaguers Monday at Kissimme, Fla. "He got my attention."

Then the Rocket got Koby's. The next time his oldest son came to the plate, Roger buzzed him high and tight with another fastball.

No breaks!