A Rochester pizza deliveryman was jumped last night by two men but ran off before he was seriously injured.

 Police say the 24 year old man was making a residential delivery around 10:45 p.m. in the 600 block of 3rd street northwest and was met by a man who called him behind the building.  Without warning, the man struck the victim over the head with a bat and a second man began punching him.  The victim dropped the pizza and ran and a few blocks later, called 911.  A police spokesman says the victim man had a head injury but refused medical attention.