Giants add five to 40-man roster

Nick Noonan, Jake Dunning, Chris Heston, Edwin Escobar and Juan Perez were added to the 40-man roster, the Giants announced Tuesday night. The roster now stands at 35, with free agency and arbitration still to come. These moves represent the Giants' desire to protect those players from the Rule 5 draft, where other teams can poach eligible prospects from each other's farm systems if they can assure them a spot in the majors.

Drafted by the Giants in 2007, Noonan is a middle infielder who spent a full season at Triple-A Fresno in 2012, where he hit nine home runs and posted a .296/.347/.416 batting line.

Dunning and Heston are both right-handers who played all of 2012 at Double-A Richmond. Heston started 25 games and posted a 2.24 ERA while Dunning appeared in 44 games out of the bullpen.

Escobar, a left-handed starter, pitched 22 games at Single-A Augusta and compiled a 2.96 ERA.

Perez hit 11 home runs in Richmond and posted a batting line of .302/.341/.441.