Plouffe will start at third base and bat fifth Wednesday against the Reds, Bill Chastain of MLB.com reports.
The Rays have wasted no time in seeing what Plouffe can do after acquiring him from the Athletics over the weekend. He'll make his third straight start Wednesday, with his entry into the lineup coming at the expense of Colby Rasmus (hip), who has yet to see the field during the series. At the very least, Plouffe looks to see regular at-bats against left-handed pitching, but he'll need to show more improvement upon his .184/.243/.346 season-long line against right-handers to secure a full-time role.