The Boston Red Sox have acquired closer Craig Kimbrel from the San Diego Padres, according to Ken Rosenthal of FOX Sports.

In return, the Red Sox received left-handed pitcher Logan Allen, third baseman Carlos Asuaje, center fielder Manuel Margot and Javier Guerra, per multiple reports. 

Boston was noted as a team that needed back-end help in the bullpen. Under Dave Dombrowski, the new President of Baseball Operations, the team locked up one of the best closers in the game. It is the first significant addition for Dombrowski and the front office, who will look to grow their talent level this offseason. 

The 27-year-old has posted a 1.63 ERA over six Major League Baseball seasons, while adding 225 saves over 348.1 innings. In 2013, he collected 50 saves in a single season, which is a career-high for Kimbrel. 

Last season, was his worst of the six. Kimbrel went 4-2 with a 2.58 ERA over 59.1 innings pitched. In 2012, the closer had his best season. When he was 24, Kimbrel posted a 1.01 ERA with a league-high 42 saves. It was the second All-Star season for the righty. 

Back on April 5, 2015, the Atlanta Braves traded Kimbrel with Melvin Upton Jr. to the Padres. Now, he is on the move again, across the country. 

Kimbrel is under control through the end of 2018 and will be paid $11 million in 2016 and $13 million in 2017 before he has a club-option for 2018. After the trade for Kimbrel, the Red Sox will push Koji Uehara into a setup role. 

The big addition for San Diego is Margot, who is a 21-year-old from the Dominican Republic. He has knocked 23 home runs and 175 RBI with a .282 batting average over 342 games over four Minor League Baseball seasons. In 2015, Margot played for Advanced Single-A Salem. MLB.com's third-best prospect in Boston's system is noted as a five-tool player. 

The sixth-best prospect in Boston's system and the 76th-best in all of baseball is also heading to San Diego. Guerra, 20, has excellent offensive talents including serious power. Last season for Single-A Greenville, Guerra clobbered 15 home runs and 68 RBI over 116 games at shortstop. The youngster hit .279 during the season, but has a ton of time to develop his game to eventually hit over .300 at the Major League level. 

Along with Margot and Guerra is Asuaje. The 24-year-old is considered a later-bloomer, but has a bit of potential. The 23rd-best prospect for the Red Sox according to MLB.com played for Double-A Portland last season, but hit just .251 with eight home runs. 

The youngest player to be moved in the trade is Allen, an 18-year-old. The 25th-best Boston prospect is a left-handed pitcher, who was outstanding for Low-A Lowell and Rookie GLC in 2015. He tossed 24.1 innings over eight starts and posted a 1.11 ERA. With GCL alone, he gave up just two runs over 20.0 innings, which is good for a 0.90 ERA. Allen has a very strong fastball and a slick slider. 

For A.J. Preller, the general manager for the Padres, this is the second big bullpen arm that he has dealt away. Earlier this week, San Diego traded reliever Joaquin Benoit to the Seattle Mariners.