Palmer suffered a left arm injury during Sunday's contest against the Rams in London, Darren Urban of the Cardinals' official site reports.

EDGE Analysis

After taking a hit on a second-quarter interception, Palmer was looked at by the team's medical staff before going to the locker room. As he left the field, he was holding up his left arm while swinging his right arm normally, according to Josh Weinfuss of ESPN.com. If Palmer is unable to return, he'll end the day 10-of-18 passing for 122 yards and the pick. Meanwhile, Drew Stanton took over direction of the offense.

Palmer completed 18 of 22 passes for 283 yards with three touchdowns and one interception in Sunday's 38-33 win over the Buccaneers. He also lost four yards on five rushes and logged a fumble and fumble recovery.

EDGE Analysis

The veteran signal caller posted a spectacular 81.8 percent completion rate and 139.4 rating for the contest, while also averaging 12.9 yards per attempt. All three numbers -- along with his trio of touchdown passes -- were season highs for Palmer, who once again displayed a prolific connection with Larry Fitzgerald to the tune of 10 receptions, 138 yards and one score. With the newly-signed Adrian Peterson turning back the clock Sunday with 134 yards on 26 rushes, Palmer notably put up less than 30 pass attempts for the first time all season. If Peterson's performance is more than a one-game outlier, the balance he'll bring to the offense could make Palmer even more effective than he's already proven to be this season. The 37-year-old will look to deliver once again versus the Rams in Week 7.

Palmer completed 28 of 44 passes for 291 yards and a touchdown in Sunday's 34-7 loss to the Eagles.

EDGE Analysis

Arizona's offense struggled early with five drives of less than 25 yards in its first six possessions, but Palmer came away with a solid, but unspectacular, stat sheet. The loss of David Johnson continues to hurt the Cardinals' overall, but the results probably benefit Palmer from a fantasy perspective. Without much of a running game, Palmer has thrown for at least 325 yards in three of his last four games. He hasn't scored much, with a touchdown:interception ratio of five:two during that span, but if you're looking for a quarterback that is going to have the chuck it up a ton to put his team in position to win, Palmer is your man.

Palmer completed 33 of 51 passes for 357 yards, one touchdown and an interception during Sunday's 18-15 overtime victory over the 49ers. He added one rushing yard on two carries.

EDGE Analysis

Palmer and company were stymied most of the night thanks to a non-existent run game and an offensive line that gave up six sacks by game's end. However, the veteran gunslinger stayed poised and rallied his team to a last-minute touchdown in overtime that culminated with a 19-yard strike to Larry Fitzgerald. The success of the Cardinals offense solely lies in the arm of Palmer with David Johnson (wrist) no longer in the fold and, despite his team's real-life struggles, Palmer has now thrown for over 300 yards and a touchdown in three consecutive games, proving to be worth legitimate fantasy consideration in deep or 2-QB formats along the way.

Palmer completed 29 of 48 passes for 325 yards and two touchdowns in Monday night's 28-17 loss to the Cowboys.

EDGE Analysis

Palmer was regularly under siege by Dallas' pass rush, evidenced by the six sacks he took in Arizona's losing effort. Despite limited time to throw, however, Palmer was still able to manufacture a second straight game with over 320 passing yards. With a touchdown on both sides of halftime, Palmer also managed to double his season total without adding any more turnovers to his tally. As Palmer and the Cardinals offense searches for ways to replace David Johnson's (wrist) production, a home matchup against the 49ers awaits in Week 4.

Palmer completed 19 of 36 passes for 332 yards with one touchdown and one interception while adding six yards on three rushes in Sunday's 16-13 overtime win at Indianapolis.

EDGE Analysis

Palmer failed to connect with Larry Fitzgerald on 4th and goal from the one-yard line early in the second quarter, but did eventually find pay dirt in the fourth on a 45-yard pass to J.J. Nelson to spur a late comeback from a 13-3 deficit. While the running game stumbled in David Johnson's (wrist) absence, Nelson and Jaron Brown stepped up at wide receiver with John Brown (quad) out and Fitzgerald having a quiet day. Arizona's offense still possesses enough weapons to make Palmer dangerous in favorable matchups, though Week 3's Monday Night Football matchup with the Cowboys isn't one of those.

Palmer completed 27 of 48 passes for 269 yards, one touchdown and three interceptions during Sunday's defeat at Detroit.

EDGE Analysis

The Cardinals' pass-to-run ratio (48:18) was a bit odd with one of the best running backs at the disposal of head coach Bruce Arians (David Johnson) and holding a lead until the 9:27 mark of the fourth quarter. During the course of the game, Johnson was lost with what has been deemed a sprained wrist, while left tackle D.J. Humphries sustained a knee injury of unknown severity. If those two key cogs miss time -- Johnson, at the very least, is expected to do so -- much of the offensive onus could land on Palmer's right arm. With one reliable option likely down, Larry Fitzgerald, J.J. Nelson, John Brown and Andre Ellington may have to suffice as Palmer's top receivers for the time being.

Palmer completed eight of 13 passes for 86 yards with one touchdown and no interceptions in Saturday's 24-14 preseason win over the Falcons.

EDGE Analysis

Palmer found John Brown on a 28-yard score to cap off an impressive 12-play, 90-yard drive for the first points of the evening for either club. The veteran exited the game after the conclusion of that possession early in the second quarter, having helmed three drives overall. The plan coming in had been to limit Palmer's snaps overall, so the relatively early exit (for a third preseason contest) wasn't surprising. Palmer is expect to sit out the Cardinals' fourth and final preseason contest against the Broncos next Thursday in order to ensure his health for the Sept. 10 season opener against the Lions.

Palmer will max out at approximately 30 snaps in Saturday's preseason game at Atlanta, Mike Jurecki of Arizona Sports 98.7 FM reports.

EDGE Analysis

Head coach Bruce Arians placed a cap on the starting unit, but it doesn't apply to David Johnson and Larry Fitzgerald, who will both get just a brief spell on the field. If Palmer reaches the expected number of snaps, he'll have built up from 15 in preseason Week 1 to 30 in the upcoming exhibition. Once he yields the floor to the reserves, Drew Stanton will likely receive the next chance to direct the offense.

Palmer completed nine of 14 passes for 67 yards and a score in Saturday's preseason game against Chicago.

EDGE Analysis

After the first two drives ended with punts, Palmer finished his night with an 11-play, 43-yard drive capped off by a one-yard touchdown pass to Jermaine Gresham. The Cardinals would've liked to get more out of their wide receivers after coach Bruce Arians mentioned the position as a concern during the week. There's only so much Palmer can do if Larry Fitzgerald and David Johnson don't have any productive complements in the offense. There's still hope in Arizona that John Brown (quad) can get healthy and stay that way, though it's unclear if he'll play at all this preseason. Jaron Brown started Saturday's game, less than 10 months removed from a torn ACL.