Eduardo Rodriguez, originally schedule to pitch Sunday, will pitch in the the first game, while Steven Wright gets the call in the second game.
"Just based on the conditions and even the standing water from last night and no drainage in the outfield, honestly I don't think playing tonight was ever really a likely situation," said Farrell.
The grounds crew tarped the field about an hour before the scheduled first pitch at 8:05 p.m. ET, in what was supposed to be the third game of the Red Sox's four-game set against the Angels. The start time was initially pushed back to 9 p.m., but with rain still steady at 8:30 p.m., the Angels announced they would reevaluate the situation -- and consider whether or not the game could be played -- at 10:15 p.m.
The last time a game was rained out in Anaheim was 20 years ago -- on June 16, 1995, against the White Sox.
The last rain delay at Angel Stadium was on April 24, 2011, also against the Red Sox. That game was only delayed for five minutes at the start, though.
"This is some Red Sox stuff right here," Boston designated hitter David Ortiz said. "Everywhere we go it rains. I'm not surprised."
This postponement is a tough way to begin the second half of the season for the Red Sox. Along with the two games on Monday, the team begins a three-game series in Houston on Tuesday with the first pitch at 8:05 ET.
"It is what it is," Ortiz said. "It is definitely going to make things harder."
Quinn Roberts is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.