Pitching for High-A Tampa, right-hander Joba Chamberlain allowed two runs on two hits and a walk in two innings this evening. He surrendered a homer to the first batter he faced and the second run came around to score with the help of a passed ball a sacrifice fly. They’re the first runs and baserunners he’s allowed in his four rehab appearances. Joba struck out one — the final batter he faced — and threw 19 of his 32 pitches for strikes. No word on the velocity yet, but I’m sure we’ll get an update later tonight.