Sunday's powerful display capped a four-homer week for Martin, the most by any NL hitter. Martin finished the week hitting .375 (9-for-24) and led the Senior Circuit with 23 total bases and a .958 slugging percentage.
Playing in his first season with the Pirates, Martin also played a pivotal role in Pittsburgh's win over its division rival on Saturday night. With the Pirates trailing, 2-0, in the seventh inning, Martin connected on a two-run homer to tie the game en route to a four-run inning and eventual 5-3 victory.
As for his big day Sunday, Martin's three extra-base hits marked just the second time in the last 50 years that a Pirates catcher recorded three extra-baggers with at least two being homers. Ryan Doumit also accomplished the feat on June 10, 2008.
For the season, Martin is hitting .267 with five home runs and nine RBIs, entering play Monday.
Paul Casella is a reporter for MLB.com. Follow him on Twitter @paul_casella. This story was not subject to the approval of Major League Baseball or its clubs.