The Pirates become the first team in major league history to turn a 4-5-4 triple play in their 7 – 5 win over the Cardinals. With runners on second and third base in the 2nd inning, Yadier Molina lines out to 2B Neil Walker, who throws to 3B Jung Ho Kang to double off Jhonny Peralta; Kang then throws back to Walker who gets to second base ahead of Jason Heyward, who freezes between second and third base.

This Day In Baseball

On May 9, 2015 — The Pirates become the first team in major league history to turn a 4-5-4 triple play in their 7 – 5 win over the Cardinals. With runners on second and third base in the 2nd inning, Yadier Molina lines out to 2B Neil Walker, who throws to 3B Jung Ho Kang to double off Jhonny Peralta; Kang then throws back to Walker who gets to second base ahead of Jason Heyward, who freezes between second and third base.

Source:
Baseball Reference May 9