Aaron Cook

On January 16, 2013, Cook signed a minor league deal with an invitation to spring training with the Philadelphia Phillies. He was released by the Phillies on March 26, 2013 as he did not make the big league roster.

On March 29, 2013, Cook signed with the Colorado Rockies. He signed to play with Colorado Springs Sky Sox, the Rockies Triple A Baseball team. After posting a 0–5 record with an 8.15 ERA, Cook told the team on July 19 that he would not pitch for them again in 2013, and was released. It was later revealed Cook had severe inflammation in his elbow, and decided to end his season.

After missing most of the 2013 season due to injury, Cook after more than 5 months has expressed a return to pitching. Cook later decided to rest and work out for MLB teams in 2015.

On January 14, 2012, Cook signed a minor league deal with the Boston Red Sox that included an opt-out clause if he didn't make the Red Sox by May 1. Cook was recovering from shoulder and knee injuries that plagued him in 2010 and 2011. In five games with Triple-A Pawtucket, he went 3-0 with two complete games. On May 1, the day he chose to exercise his opt-out clause, it was announced he'd be promoted to Boston to start in place of the injured Josh Beckett. Cook received a pro-rated salary of $1.5 million plus incentives. He also had a second opt-out clause for June 1.

On May 5, 2012, Cook made his Red Sox debut against the Baltimore Orioles. He pitched only 2​⁄3 innings, as a result of an injured knee off the spikes of Orioles first baseman Chris Davis. After getting treatment in the clubhouse, Cook returned, only to then pitch a two-run home run from Adam Jones. He was placed on the disabled list the next day.

On June 29, 2012 against the Seattle Mariners, Cook threw a complete game shutout, allowing just two hits and walking none over 81 pitches, notching the 74th victory of his career.

Cook's 2010 season was a season filled with inconsistency and injuries, as he wound up 2 times on the DL. The first one occurred in August, when Cook landed on the 15‑day Disabled list with a sprained toe.

Cook later came back in September, after pitching in just his second start off the disabled list, Cook suffered a non displaced fracture in his leg, ending his 2010 season.

His repertoire also includes a curveball, a changeup and a cutter he added in 2010.

He won six consecutive starts from April 13, 2008 to May 9, 2008. He is one of only four Rockies pitchers to have won 11 games before the All Star break through 2010; the only others are Shawn Chacón (2003) Jason Marquis (2009)and Ubaldo Jiménez (2010).

On July 6, 2008, Cook was named an All-Star to the 2008 Major League Baseball All-Star Game. The All-Star selection was the first of his career. He pitched three scoreless innings in the All-Star Game, and at one point pitched out of a no-out, bases loaded jam after two errors and an intentional walk, avoiding the loss. Various broadcasters have stated that, had the National League won the game, he would have been named MVP of the All-Star Game that year.

In a 2008 game against the San Diego Padres Cook threw a complete game shutout while hurling just 79 pitches.

Cook finished the 2008 season with a career high 16 wins and 96 strikeouts. He gave up 20 hits on 0-2 counts, more than any other pitcher in baseball.

Cook was close to following his 2008 campaign with another good season for the Rockies, compiling a record of 10-6 through the month of August until an injury caused him to miss the month of September. Cook would later appear in October, pitching 8 innings in a win over the Milwaukee Brewers.

On June 28, 2007, Cook allowed Craig Biggio's 3,000th hit in Minute Maid Park.

Cook finished the season with an 8-7 record in 25 starts. After the 2007 season, $4.5 million next year under an option the Rockies exercised and Cook signed a three-year contract extension worth a guaranteed $30 million and a team option for the 2012 season.

He saw his 2004 season come to an abrupt end when it was discovered that he suffers from pulmonary embolism, or blood clots. During an August 7 start against the Cincinnati Reds, Cook complained of dizziness and shortness of breath. After he was taken to a local hospital, doctors discovered blood clots had formed in his right shoulder. On September 10, Cook underwent extensive surgery at a St. Louis hospital during which the first rib on his right side was removed to relieve compression on a major blood vein.

Cook was drafted by the Colorado Rockies in the 2nd round of the 1997 MLB Draft and made his Major League debut in 2002.

Aaron Lane Cook (born February 8, 1979) is an American former professional baseball pitcher. He played in Major League Baseball (MLB) for the Colorado Rockies and Boston Red Sox.