Arizona Diamondbacks right-hander Corbin Burnes (shoulder) threw on flat ground on Monday before the team's series opener at Chase Field against the visiting New York Mets. Burnes then spoke with trainer Ryan DiPanfilo and pitching coach Brian Kaplan, which ended with a fist bump. The D-backs kept the 30-year-old veteran from making his scheduled start on Monday against the Met after he worked his way through right-shoulder fatigue in his last two outings. It sounds as though his throwing session went well on Monday, though, and the team remains optimistic that he won't need to go on the injured list. The four-time All-Star only allowed four runs (two earned) with eight walks and 11 K's in 11 1/3 innings while being less than 100% in his last two starts against the Rays and Mets. Overall, he has a 3.58 ERA and 1.38 WHIP with 28 K's in 32 2/3 innings over his first six starts. Burnes is a must-start in fantasy when he's on the mound.UPDATE: Manager Torey Lovullo said that Burnes is still on track to make his next start.

Los Angeles Dodgers outfielder Teoscar Hernandez (hamstring) left Monday's series opener against the hosting Miami Marlins early due to left-hamstring tightness, according to the team. Before leaving the game early, Hernandez was 2-for-2 with an RBI for the Blue. Andy Pages shifted from center field to right field, while Chris Taylor entered the game to play center field for L.A. Losing Hernandez for any amount of time would be a big blow for fantasy managers. The 32-year-old Dominican veteran came into Monday's action hitting an impressive .305/.323/.586 with a .909 OPS, nine home runs, nine doubles, a league-leading 33 RBI, four stolen bases and 21 runs scored in 32 games. Check back for an update on Hernandez's condition later Monday or Tuesday morning. If he's forced to miss time, Taylor figures to be the biggest beneficiary of playing time in the Dodgers' outfield.UPDATE: Hernandez will get an MRI exam on Tuesday. "A little concerning," manager Dave Roberts said.

Minnesota Twins starting pitcher Zebby Matthews showed off his swing-and-miss stuff during a start against the Columbus Clippers on Sunday. Matthews went four innings, allowing two runs on seven hits while striking out five batters in a no-decision. The right-hander has struggled during his last two starts, but the five punchouts is nice to see. Despite his recent struggles, Matthews still holds a 2.30 ERA with 34 strikeouts with Triple-A St. Paul this season. There is still a good chance that we see Matthews on the big league mound at some point this season. However, he'll likely need to clean it up a bit before the Twins decide to bring him into their rotation.

Arizona Diamondbacks relief pitcher Justin Martinez (shoulder) was recently placed on the 15-day injured list. The right-hander is dealing with right shoulder inflammation, but hopefully he won't be sidelined for too long. He underwent additional imaging that didn't show any significant damage. That being said, Martinez is reportedly going to begin a throwing program this week. It's unclear if Martinez will need to go on a rehab assignment before returning. He isn't eligible to return until the middle of May, so it wouldn't be shocking to see Martinez throw a few minor league games. In the meantime, the D-Backs are likely going to use a committee approach at the closer which involves Ryan Thompson, Shelby Miller, Jalen Beeks, and Kevin Ginkel.

Cincinnati Reds infielder Tyler Callihan (forearm) was forced to exit early during Monday's game against the Atlanta Braves. Callihan suffered a broken left forearm when he collided into the wall while trying to make a catch in the third inning. This is terrible news as Callihan is going to miss significant time from this injury. He got called up to the big leagues last week and was only playing in his fourth big league game before suffering this injury. The organization should give a timetable at a later time, but fantasy managers in redraft formats should probably go ahead and look for another option. Callihan isn't going to be in the lineup anytime soon, which is a shame considering he's a promising young player that could be a legitimate contributor on this roster.UPDATE: Callihan is expected to need surgery on his broken forearm.