In 18 games with Iowa this season, McGehee batted .173. The 24-year-old was selected in the 10th round of the 2003 draft from Fresno State.
For his part, Richie was promoted to Triple-A after batting .217 in nine games with Tennessee. He batted .230 a season ago at Double-A in 72 games. The 25-year-old was a fourth-round draft pick from Florida State in 2003.