The MLB Immaculate Grid’s July 13 edition is out. Today’s grid features the Colorado Rockies in the first column and the Oakland Athletics in the second row.
Therefore, the correct answer will be the names of players who have played for both the Colorado Rockies and the Oakland Athletics. One notable player who has represented both franchises is Jason Giambi.
Giambi’s major league debut was with the Oakland Athletics in 1995. Despite initially being an outfielder, he started playing as a first baseman upon Mark McGwire’s trade to the Cardinals.

In 2000, Giambi bagged the American League Most Valuable Player Award. He batted .333 (seventh in the American League) alongside 43 home runs (second) and 137 RBIs (fourth).
In his second stint with the A’s in 2009, Giambi hit his 400th career home run in an 8–7 loss to the Arizona Diamondbacks.
The Colorado Rockies signed Giambi in 2009. In 2012, he was offered the team’s hitting coach job but he eventually turned it down.
Other MLB players who have played for both the Colorado Rockies and the Oakland Athletics

Other correct responses include Carlos Gonzalez, Brett Anderson, Jack Cust, Brent Mayne, Jose Ortiz and Chad Smith.
Gonzalez was an outfielder who played for the Oakland Athletics in 2008. The three-time All-Star was named the National League batting champion in 2010. He bagged the Silver Slugger Award two times and is a three-time Gold Glove winner as well.
He played for the Colorado Rockies from 2009 to 2018.