Gabe Kapler stood when the national anthem was played before the San Francisco GIants' game against the Philadelphia Phillies on Memorial Day.
Kapler began a protest against the direction of the nation on Friday.
"Today, I'll be standing for the anthem," Kapler said Monday on his blog. "While I believe strongly in the right to protest and the importance of doing so, I also believe strongly in honoring and mourning our country's service men and women who fought and died for that right. Those who serve in our military, and especially those who have paid the ultimate price for our rights and freedoms, deserve that acknowledgment and respect, and I am honored to stand on the line today to show mine."
The manager had been avoiding the field during the national anthem as a protest after last week's school shooting in Uvalde, Texas, but he said Sunday that he was considering suspending his protest in light of Monday being Memorial Day.
"I'm very comfortable taking it day by day," Kapler said Sunday of his protest. "I think I'll just decide what makes the most sense in the moment."