SF Giants demote Kontos, Runzler; plus 25-man speculation

In moves that were not expected this soon, the Giants optioned reliever George Kontos to Triple-A Fresno and reassigned nonroster lefty Dan Runzler to the minor-league camp. That leaves five relievers competing three open spots, although it seems more likely that the three 40-man pitchers who are out of minor-league options - righties Yusmeiro Petit [...]