Powell has seen limited time all season, last getting a start on June 4 against the Red Sox. But the North Carolina native will give a much-needed day off to starting catcher Kurt Suzuki, who has seen time in 27 games over the last 29 days.
"Kurt wants to play every day," Melvin said. "He's able to do it, but you also want to keep him fresh. I think, even as a regular behind the plate, when you're playing that much, you don't even understand the toll it takes on you. I want everyone to be part of it. We need to get [Powell] involved. He does a nice job behind the plate."
Powell is hitting .204 in just 49 at-bats this season and has never faced White Sox hurler Phil Humber, who will man the mound Sunday as Chicago tries to take secure a series win.
Humber, who joined the White Sox as a waiver claim, has been stellar for the club this season and was the reason the team stuck with a six-man rotation when Jake Peavy returned to the rotation. But with Peavy on the disabled list again, Humber is holding down the fort for the White Sox.
The righty has won his last three decisions, including a six-inning outing against the A's on May 13. That day, Humber gave up three earned runs on six hits, but didn't walk any batters in a 4-3 win. On the year, Humber's 2.87 ERA ranks just outside of the American League's top 10.
"He's come into his own," said White Sox first baseman Paul Konerko after Humber's last outing. "He's got a great arm and he was a top prospect with other organizations, and sometimes it takes a couple tries at it to kind of settle in. He's a handful out there. He's got lot of weapons and he's throwing strikes. You can tell he's kind of in a zone, where he's pitching with a little bit of a chip on his shoulder and it's great to see."
A's: Moscoso to make first career start against White Sox
The A's starting rotation has been plagued by injuries all season, and it's the reason Guillermo Moscoso is currently starting for the club. In three starts this season, Moscoso has gone 2-1 and allowed six combined runs. The righty will try to improve that record when he takes the mound on Sunday.
Following a 1-for-4 outing on Saturday, A's center fielder Coco Crisp is one hit away from 1,000 for his career. Crisp hit a leadoff double in the sixth inning Saturday for career hit No. 999.
White Sox: Konerko extends hitting streak
First baseman Paul Konerko extended his hitting streak to 12 games on Saturday with a 1-for-4 performance in the 3-2 win against the A's. However, the slugger saw another streak come to an end. Konerko's lone hit was a single, which halted his streak of nine straight games with an extra-base hit, the longest such streak in franchise history.
Five of the nine meetings between the White Sox and Athletics this year have been decided by one run. After Saturday's one-run win for the White Sox, they lead the season series, 5-4.