NEW YORK -- Steven Matz is not ready to come off the disabled list, and the New York Mets have scratched him from his scheduled start Thursday night against Miami.The rookie left-hander, sidelined with tightness in his pitching shoulder, said he felt OK after throwing off a mound Sunday but experienced discomfort while playing catch Monday. Jacob deGrom will be moved up a day to start for Matz in the finale of a four-game series between NL wild-card contenders, manager Terry Collins said Tuesday.Tests showed no structural damage in the shoulder, according to Matz and Collins.Just a little irritation. Still bugging me a little bit, dont quite feel I can really let it go yet. Talked to them and the training staff, and that was the decision, just give it some more rest and let it calm down, Matz said. Theres just irritation in the rotator cuff. As far as the medical terms, the doctor said everything structurally looks OK, its just classic impingement, is what I guess you can call it.In other injury-related news, Neil Walker remained out of the lineup for the third consecutive game Tuesday with a stiff back.The second baseman has been to the doctor for tests but Collins was cryptic about Walkers recurring condition, saying he was aware of the diagnosis but wasnt at liberty to reveal it.Collins indicated the team hopes Walker can play Wednesday -- but also said if the switch-hitter returns to the lineup, he will need to monitor and manage his back regularly and wont play five or six days in a row.Theres a lot of concern, Collins said. He wants to wait one more day, which I totally get. The more rest, the better hes going to feel. So lets just see how he is tomorrow.Walker, who can become a free agent after the World Series, has matched his career high with 23 home runs in his first season with the Mets since they acquired him from Pittsburgh in a trade. He was batting .282 with a .347 on-base percentage and 55 RBI.He kind of thinks hes a lot better today and thats why we think tomorrow well know a lot more, Collins said.There was some good news for the Mets: Streaking shortstop Asdrubal Cabrera returned to the starting lineup and hit a two-run homer on the first pitch he saw. It was the 17th home run this season and fourth in 11 at-bats for the reigning NL player of the week.Cabrera left Sundays loss to Philadelphia in the first inning after aggravating a left knee injury that sidelined him twice earlier this year. He struck out as a pinch-hitter Monday night.Matz, who had been pitching with a bone spur in his elbow, said he believes he will return to the mound this season.I think its a day-to-day thing. The doctor believes I can pitch again, with the results and MRI, he said. Its not a surgery-type deal.Matz is 9-8 with a 3.40 ERA in 22 starts and 132 1/3 innings. He took a no-hitter into the eighth inning of his most recent outing, Aug. 14 against San Diego.My arm was feeling great, which was why this is a big disappointment, because I was really feeling really good and a few days after throwing that last game I threw, something just started barking at me and it hasnt really subsided since, he said.Matz said originally it was a curveball that caused him discomfort, but now he simply feels it when throwing.I was able to get my tossing in, but for me to get on the mound and throw a bullpen and tell them Im ready for a game would be unrealistic in my mind, he said.Rookie right-handers Robert Gsellman and Seth Lugo will both remain in the rotation until Matz is ready to return, Collins said.Matz probably wont throw for at least a few days.He needs more rest. He needs to continue some more therapy, Collins said. Were hoping that in a couple days we can throw him over the weekend and see if he can be ready next week.New York added a fresh arm to the bullpen Tuesday, recalling right-hander Logan Verrett from Triple-A Las Vegas. Right-hander Rafael Montero was optioned back to Double-A Binghamton after throwing 100 pitches over five shutout innings in a spot start Monday night.Swell Italia . The formidable trio of Canadian receivers -- individually known as Chris Getzlaf, Rob Bagg and Andy Fantuz -- will share the field at Mosaic Stadium one more time on Sunday. Swell Bottle Italia .J. -- Pitcher Carl Pavano is retiring after 14 major league seasons. http://www.swellbottiglie.it/ .ca NFL Power Rankings, overtaking the Denver Broncos and remaining ahead of NFC competition San Francisco, Carolina and New Orleans. Swell Bottiglia Blanc .05 million next season unless Graham and the Saints subsequently agree on a long-term deal. The designation was released Monday after the deadline passed for NFL teams to use franchise or transition tags on players becoming free agents. Swell Offered Italia . Brandon Morrow allowed five runs on six hits over three innings. He struck out two, walked one and hit a batter. Edwin Encarnacion had a two-out, bases loaded two-RBI double in the third inning.Top-ranked Jason Day has a tough chase on his hands as world No.2 Dustin Johnson continues to lead the way at the halfway mark of the Canadian Open.Johnson continued his hot form despite a rollercoaster round, setting the pace at Glen Abbey Golf Club at seven under par.Johnsons up and down one-under-71, where he dropped four shots in his opening four holes but clawed back, has him in the box seat for a third win in four starts.Already closing in on Days world No.1 mark, a win would have him breathing down the Australians neck heading into next weeks PGA Championship.Johnson leads with fellow overnight leader Luke List (71) while Day struggled to a 76, leaving him eight shots back.The day was pretty tough in itself and then I really didnt have anything going well, Day lamented. Off the tee was terrible. Hitting the greens were terrible. Chipping was terrible and putting was terrible. So put all that together, you shoot four over.Day backed up his round-one efforts of hitting only four fairways by hitting just two on Friday, while his usually sublime putting was also missing.Hot and blustery conditions, with super firm greens, contributed to his woes but Day is mindful of the PGA Championship starting next week.You can try to be aaggressive around here, so Im just going to go out there tomorrow and try and enjoy myself and also try and work on things that need to be worked on for the PGA, Day said.dddddddddddd.If were going to have wind conditions like this and the course is tough, they are not going to move too far so Ive just got to play really, really good golf over the weekend to even have a sniff at catching them.American Kelly Kraft (71), young Spanish star Joe Rahm (71) and Canadian amateur Jared du Toit (71) sit tied third at six under.Not since 1954 has a Canadian won their national open.Rod Pampling (71) and Greg Chalmers (73) are the leading Australians at two under, five shots back, while Rhein Gibson (72) and Geoff Ogilvy (71) sit even par.John Senden (72) joins Day at one over while Robert Allenby (74), Stuart Appleby (75) and Cameron Percy (75) scraped inside the cut at two over. Steven Bowditch (+5) and Cameron Smith (+9) are headed home.Appleby moved within one shot of the lead after making two eagles and a birdie in a four-hole stretch early in his round before playing his last seven holes in seven over par. ' ' '