Jason Kubel (back) was hitless in three at-bats Tuesday in his return to the lineup.

Kubel was scratched from Sunday's lineup due to a stiff back, but it's not a major concern. The 31-year-old outfielder is batting just .231 with five homers and a .659 OPS in 71 games this season.

Jason Kubel was scratched from the Diamondbacks' lineup Sunday due to a stiff back.

It appears to be a day-to-day situation. A.J. Pollock entered the lineup in Kubel's place and will play center field, shifting Adam Eaton to left.

Jason Kubel went 4-for-5 with a double, an RBI and three runs scored in Friday's 11-5 victory against the Reds.

Kubel is enjoying a great month; he has only gone hit-less in two June starts. He began this month with a .237 batting average and now sits at .273, more in line with his career number. Kubel has four homers and 22 RBI over 139 at-bats.

Jason Kubel hit his first homer since April 29 in the loss to the Dodgers on Tuesday.

Kubel homered in his second game back from the DL in April, but he had gone 27 games and 83 at-bats since without one before taking Zack Greinke deep tonight. He also made a pretty outstanding diving catch in left field and he was one of the few players not hit by a pitch, so it was quite a night for him.

Jason Kubel went 2-for-6 with a three-run double and an RBI groundout on Saturday.

Kubel had just five RBI in 19 games last month, but he nearly matched that total on the first day of June. His power numbers should be pretty strong the rest of the way, even though he's only playing against righties right now.

Jason Kubel went 0-for-4 on Friday, dropping his average to .231.

.231 wouldn't be so bad if he were hitting for his usual power, but Kubel has just three homers and three doubles in 91 at-bats this season after coming through with 30 of each last year. The Diamondbacks will keep playing him against righties and wait for the turnaround, but he's not going to get any starts versus lefties while he struggles.

Jason Kubel (quad) will return to the Diamondbacks' lineup Sunday.

Kubel still isn't totally over his left quad injury, so the club is taking it easy with him. He might continue to see more days off than normal as he tries to put the malady behind him.

Jason Kubel has been out of the starting lineup the past two games after aggravating his left quadriceps injury.

The injury forced him onto the disabled list earlier this season. "Just trying to get over that," Kubel said. "We decided to give it a few days rest." Kubel was batting .333/.375/.600 with two homers and six RBI before going down with the injury on April 9 and he's struggled mightily since, batting .167 since his activation. Arizona begins a three-game series Friday against Florida and Kubel's former Twins teammate Kevin Slowey. Cody Ross and A.J. Pollock will pick up additional at-bats if Kubel can't play.

Jason Kubel lifted a two-run homer in Monday's loss to the Giants.

The longball was the first of three to leave the yard versus Matt Cain in the fourth inning. Kubel also drew a walk in his second game back from the disabled list. Despite missing nearly weeks of action, Kubel has three dingers this month.

Diamondbacks activated OF Jason Kubel from the 15-day disabled list.

Kubel had been slated to play in rehab game on Monday and Tuesday, but the D'Backs have obviously scrapped that plan and decided to activate him a few days early. The outfielder was batting .333/.375/.600 with two homers and six RBI before going down with a quad injury on April 9.

Diamondbacks manager Kirk Gibson said Saturday that Jason Kubel (quadriceps) will play minor league rehab games on Monday and Tuesday at Triple-A Reno.

Which would put the outfielder in line to return on Wednesday, May 1 for the Snakes' series-finale with the Giants. Kubel has been on the disabled list since April 13 with a strained left quad. He homered and finished 3-for-4 Saturday in an extended spring training game.

Jason Kubel (quad) went 3-for-4 with a home run Saturday in an extended spring training game.

Kubel is hoping to return to the Diamondbacks' starting lineup on Monday -- the first day that he is eligible for activation. He has been on the 15-day disabled list since April 13 because of a strained left quad.

Jason Kubel (quad) was the designated hitter during an extended spring training game on Thursday.

It's his first game action since he landed on the DL on April 13 with a strained left quad. When he'll be allowed to play the outfield isn't clear, but Kubel isn't far away from rejoining the D'Backs lineup.

Jason Kubel (quad) is not expected to return from the disabled list when first eligible.

Kubel had an MRI on Saturday that revealed a minor setback so the Diamondbacks are going to shut him down for the next couple of days. He was expected to return on April 28, but that obviously won't be happening.

Diamondbacks placed OF Jason Kubel on the 15-day disabled list with a strained left quad.

Kubel suffered the strain on Tuesday and hadn't made enough improvement by this weekend. He'll look to return to action by the end of April. Cody Ross was activated from the disabled list in a corresponding move.

Jason Kubel (quad) could be placed on the 15-day DL.

Kubel has been out since Tuesday with a left quadriceps injury that is not making swift enough improvement. He underwent an MRI on Saturday afternoon -- the results of which should be available by Saturday night. The Diamondbacks will activate Cody Ross (calf) from the disabled list if they put Kubel on it.

Jason Kubel (quad) is not in the Diamondbacks' starting lineup on Friday.

Kubel has been out of the lineup since Tuesday with a left quad issue, but his condition has improved over the past couple of days. It sounds like he'll avoid a trip to the DL, but could still be questionable for the remainder of the weekend. Alfredo Marte is drawing the start in left field on Friday.

Jason Kubel is not in Wednesday's lineup against the Pirates.

The exact reason for his absence isn't clear, but he indicated that he's a little banged up right now. The Diamondbacks will go with Gerardo Parra, A.J. Pollock and Alfredo Marte from right to left in their outfield on Wednesday.

Jason Kubel is not in the Diamondbacks' lineup Tuesday.

He's sitting against Cardinals' lefty Jaime Garcia, with Alfredo Marte getting the start in left field. Kubel is a career .238/.308/.382 hitter against southpaws and will likely see plenty of time off against them this season.

Jason Kubel (ankle) slugged a solo home run in his return to Cactus League action Friday against the Reds.

Good news for the Diamondbacks. Kubel made an early exit on Tuesday due to left ankle discomfort, but all signs point to him being ready for Opening Day.