Ryan Roberts felt his upper body moving ahead of his legs and frantically tried to get them in sync, thinking the entire time: Don't fall. Arizona's tattooed third baseman managed to stay upright until one final lunge, providing the capping highlight in a high-scoring, what-will-happen-next series. Fighting searing lungs and body control, Roberts hit an inside-the-park home run, one of a record-tying six for the Diamondbacks in their wild 14-10 win over the Seattle Mariners on Wednesday.