It is called choking and it was on full display for everyone to see yesterday. Some baseball fans don't want to believe that professional athletes choke, but they do. Every golfer knows about choking and every golfer chokes, except for Jack Nicklaus (a golfing god).
Here is the Red Sox lineup:
Mookie Betts, RF
Dustin Pedroia, 2B
Xander Bogaerts, SS
David Ortiz, DH
Hanley Ramirez, 1B
Travis Shaw, 3B
Brock Holt, LF
Blake Swihart, C
Jackie Bradley Jr., CF
David Price, P