Early career Newhan made his Major League debut with the Padres in 1999. He began the 2000 season as the second baseman for the Padres, but hit for a batting average of only .150 and was soon demoted to Triple-A. While in the minors, he was traded to the
Philadelphia Phillies for
Desi Relaford. The Phillies briefly kept him at Triple-A before calling him up to the major leagues. In the off-season, Newhan was traded to his previous club, the Padres, who then traded him back to the Phillies before the 2001 season. During the 2001 season, Newhan appeared in seven games for the Phillies before injuring his shoulder making a play in the outfield. "I ran into a wall, and it didn't move", he said. 2005 was a disappointment for Newhan. Because there were so many "everyday" starters on the Orioles, Newhan was relegated to the bench. He saw very limited action and struggled at the plate. Rarely playing on consecutive days, he claimed it was impossible to be consistent offensively. He was briefly demoted to Triple-A, where he hit .366. During
spring training for the 2006 season, he batted .400. While the Orioles had planned to use him as a backup, they started him in seven of their first ten games due to his spring stats. He had seven
runs, two home runs, and three stolen bases. On his third stolen base, he slid awkwardly and had to leave the game with a broken right
fibula on April 17. Newhan was placed on the
disabled list and was out until the end of August. He finished the season with a .252 average and four home runs.
New York Mets (2007) Newhan signed as a free agent a one-year, $575,000 contract with the
New York Mets on January 5, 2007, turning down an offer from the
Chicago Cubs. Newhan was used mainly as a pinch hitter by the Mets for much of April and early May, but was given a great deal of playing time after that due to a slew of injuries that landed several Mets starters on the
disabled list. Newhan hit .200, driving in only four runs (including a solo home run) with the Mets, as he played
left field and second base. On June 8, the Mets optioned Newhan to the
New Orleans Zephyrs. In July, the Mets recalled Newhan from the Zephyrs, sent him down, and recalled him once again. In 108 at bats with the Triple-A team through the end of July, he batted .358/.405/.569. Newhan was sent to Triple-A New Orleans after the season, but declined the assignment, making him a free agent.
Houston Astros (2008) On January 29, 2008, Newhan signed a minor league deal with the
Houston Astros, who invited him to spring training. Newhan split the season between the Triple-A
Round Rock Express, where he hit .308 .with a .535 slugging percentage, and the Astros, where he batted .260 in 64 games (and .408 in games that were late and close), primarily at second base. On January 29, 2009, Newhan re-signed as a non-roster free agent with the Astros, who invited him to spring training. He did not make the team out of spring training, and on March 29, Newhan was released. On July 23, 2009, Newhan was signed by the
Philadelphia Phillies organization, where he spent the rest of the year in Triple-A.
San Diego Padres (2011) Newhan signed a minor league contract for the 2011 season with the
San Diego Padres, receiving an invitation to spring training. He did not make the regular season roster. ==Coaching career==