From 2003-15, Ortiz hit .297/.421/.571 with 17 home runs and 56 RBI in 73 playoff games. That includes 2004 ALCS and 2013 World Series MVP honors. Ortiz's walk-off home run in Game 4 of the 2004 ALCS started the Red Sox's historic comeback against the Yankees.
Ortiz then hit .353/.500/.706 with five home runs and 13 RBI in 16 postseason games in 2013. That includes going 11 for 16 (.688) with two doubles, two home runs and six runs batted in during the World Series. The Cards eventually smartened up and walked Ortiz four times in the decisive Game 6.
Of course, the Red Sox played in the 2013 World Series thanks to Ortiz's heroics against the Tigers in the ALCS. He tied Game 2 with a grand slam.
Pretty tough to keep him out when he also had nearly 2500 hits and 500+ HRs.
He may not be a first ballot but he will get in.