At the plate, [Mets reliever Dae-Sung] Koo led off the seventh and drove a long double to center off Johnson...He moved to third on Reyes' sacrifice, and took off for home when he noticed that nobody was covering the plate. Second baseman Robinson Cano threw to catcher Jorge Posada, who tried to get back in time. Koo, wearing a jacket to keep his arm warm, scored with a headfirst dive just under the tag. Reyes was credited with an RBI.People get RBI's for that? Shouldn't Posada just get a error?