The Dodgers, who absorbed much of Beckett's massive contract in the deal, hope his outing will be the dawn of a new era for the former ace, who was a World Series hero with the Marlins at age 21 but had fallen from grace in Boston both on and off the field.
Beckett is 5-11 with a 5.23 ERA in 21 starts this season, a record that may lead to just the second losing season of his 11-year career -- the first since his first full season in 2002 (6-7).
"Josh has thrown a lot of innings," Dodgers manager Don Mattingly said. "He's going to have some issues going on. The stuff is probably not going to be like what it was when he was 23 or 24. When you look at Josh, he has always been able to throw the ball where he wants. When you can locate, you can get people out."
Beckett's last outing against the Rockies, his opponent Monday, was a memorable one. It came in Game 1 of the 2007 World Series at Fenway Park, a game in which Beckett struck out nine en route to the first win of a Red Sox sweep.
Interestingly enough, the man who took the loss for the Rockies in that game, Jeff Francis, will be opposing Beckett again Monday, though this time at Coors Field.
Francis has made 18 starts against the Dodgers in his career and has a 5-4 career record against Los Angeles, but he hasn't beaten the Dodgers since 2008.
The veteran lefty will be on the Rockies' much-discussed 75-pitch pitch count, despite the fact that the return of Sunday's starter Jhoulys Chacin from the disabled list means Colorado will be back to a five-man rotation.
Francis, who received a no-decision after giving up just one run in five innings against the Mets in his last outing, is second all-time on the Rockies' career wins list with 59 coming into Monday.
Dodgers: Scully returning to the booth in 2013
Vin Scully, the legendary and timeless voice of the Dodgers, announced this weekend that he will be back for his 64th season of Dodgers baseball in 2013.
Scully, 84, plans to call all games in California and Arizona, but also has interest in making the trip to Yankee Stadium for LA's Interleague matchup with the Bronx Bombers next season.
Scully has called 25 World Series and a total of three perfect games, 25 no-hitters and 12 All-Star games.
Rockies: Rutledge in a pinch
Shortstop Josh Rutledge has been out of the starting lineup for much of the last week with a quadriceps injury, but the NL's rookie leader in batting average since the All-Star break has still been making an impact.
Rutledge has been assuming pinch-hitting duties for manager Jim Tracy, and doing it well: he's 4-for-7 with a double, triple and homer, with that homer coming in the fourth inning of Colorado's 4-3 win Saturday.
When he returns to the field, Rutledge will likely do so at second base, as star shortstop Troy Tulowitzki is on the mend and in the midst of a rehab assignment that should have him back in the Colorado lineup before season's end.
So far so good for Adrian Gonzalez in Dodger Blue: After hitting a home run in his Dodgers debut, Gonzalez had a multi-hit day Sunday and is 3-for-9 with four RBIs in Los Angeles so far.