Delgado was born in Aguadilla, Puerto Rico to Carlos "Cao" Delgado and Carmen Digna Hernandez. He grew up in the El Prado section of Aguadilla. There, he attended elementary school alongside his three siblings. Both his father, "Don Cao", and his grandfather, Asdrubal "Pingolo" Delgado, were well-known figures in the town.

At the age of 16, several major league organizations including the Cincinnati Reds, Montreal Expos, New York Mets, Texas Rangers and Toronto Blue Jays saw his potential and attempted to sign him. He signed with the Blue Jays in 1988 after being discovered by team scout Epy Guerrero. After being named the #4 prospect in the minor leagues by Baseball America, he made his major league debut with the team during the 1993 season. Though he didn't play in the 1993 World Series, he was awarded a World Series ring.  Originally a catcher, he later switched to first base (after an experiment with the Jays placing him in left field failed) and became one of the most productive sluggers in the major leagues. A two-time All-Star, in 2000 and 2003, Delgado holds several Blue Jays single-season and career records. He won the Hank Aaron and The Sporting News' Player of the Year Awards in 2000, and the Silver Slugger Award in 1999, 2000, and 2003.  In 1999, Delgado hit a career-high 44 home runs, along with 134 RBI, and a .272 batting average. The next year, he batted a career-high .344, along with 41 home runs, 57 doubles, and 137 RBI. He finished fourth in the 2000 American League MVP voting.  On September 25, 2003, in a game against the Tampa Bay Devil Rays, Delgado became the 15th major league player to hit four home runs in one game. He hit a three-run home run in the first inning off Jorge Sosa, then again off Sosa while leading off the fourth off, then off Joe Kennedy while leading off in the sixth and then off Lance Carter leading off the eighth inning. Delgado is the only player to hit four home runs with only 4 at-bats in a game. In the 2003 season, Delgado hit 42 home runs and led the Majors with 145 RBI, while batting .302; he finished second to Alex Rodriguez for the AL MVP Award. He was named AL Player of the Week on September 30, 2003 and again on September 7, 2004.  Following the 2004 season, Delgado became a free agent, and was pursued by the Baltimore Orioles, Florida Marlins, New York Mets, Seattle Mariners and Texas Rangers. The Blue Jays were not interested in re-signing him, due to payroll constraints.

Answer the following question by taking a quote from the article: What impressed you about Carlos from the article?
only player to hit four home runs with only 4 at-bats in a game.