Wong was batting .222 in 49 games with 35 starts when he was demoted earlier this month to open a spot for infielder Jhonny Peralta, who came off the 15-day disabled list. The demotion came just months after he signed a five-year, $25 million contract extension.
"People take it like it's a bad thing," Wong said. "I love playing this game. I don't care if I'm getting paid or not.
"Going up to being demoted, I was feeling like things were starting to click. Everything fell into place exactly the way I knew it was going to."
A second baseman, Wong started four games in center field during the stint with Memphis, where he batted .429 with four homers, including a game-winning grand slam, and 11 RBIs in seven games. When he rejoins the Cardinals, he might split time as a center fielder with Grichuk, who is batting .209.
Hazelbaker was batting .250 with seven homers, including three as a pinch hitter, and 19 RBIs in 61 games, and he also led the team with four steals. He had five homers with a .317 average in the first month, but since then was batting .172.
ESPN Staff Writer Mark Saxon and The Associated Press contributed to this report.