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. High school In high school, while playing for Hamilton High School (Hamilton, OH), Cook allowed only one home run, to fellow Major Leaguer Kevin Youkilis, who was playing for Sycamore High School in suburban Cincinnati. Colorado Rockies Cook was drafted by the Colorado Rockies in the second round of the 1997 MLB Draft and made his Major League debut in 2002. 2002 season Cook made his debut, against the Chicago Cubs, pitching two innings and allowing a home run. He would make his first start, against the San Francisco Giants, pitching six innings while allowing four walks in a no decision. Cook would finish the season appearing in nine games (five starts) with a 4.54 ERA in 35 innings. 2003 season Cook made the opening day roster after pitching a solid spring training and was named the Rockies' #2 starter, opening the season against the Houston Astros. After posting an ERA of over 5.00 through 14 starts, Cook was demoted to Triple A in exchange for Denny Neagle, who had come out of his rehab assignment. Cook would finish the season 4-6 with a 6.02 ERA in 124 innings. He also allowed 57 walks to 43 strikeouts. 2004 season Cook 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. His season was cut short due to this injury, finishing with just 16 starts and a 6-4 record. 2005 season Cook stayed on the disabled list until July 30, when he gave up seven runs and eleven hits in 4 innings of a 9-2 loss to the Philadelphia Phillies at Coors Field. His first 2005 victory came in an 11-2 decision over the Milwaukee Brewers on August 15, when he pitched six innings and gave up two runs and nine hits. In his