HOUSTON -- Mets first baseman Daniel Murphy drew an important walk off Astros starter Aneury Rodriguez in the sixth inning of Sunday's 7-4 win over Houston.

Justin Turner followed Murphy's walk, and a single by Jason Bay, with a three-run homer.

Some thought that Murphy actually walked on three balls. But second-base umpire Angel Hernandez, the crew chief, called the third ball in the sequence when Rodriguez touched his fingers to his mouth.

"I just heard [ball]," Murphy said. "I heard Angel call it. It went from 2-1 to 3-1. Then I took a heater for ball four. It was a four-ball walk."