Waiver Wire: Is Michael Fulmer worth an add?

The flurry of major prospect callups has hit a lull but is still making an impact. Al Melchior highlights two overlooked starting pitchers in the latest roundup of waiver options.

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Last week's explosion of pitching prospect callups offered some hope to owners whose rotations fell short of expectations in April, but it may have also depleted some FAAB accounts. If you missed out on Jose Berrios, Blake Snell or Sean Manaea, their arrivals could be a gift that keeps on giving to those who saved their cash (or waiver priority).

Overlooked among those higher-profile promotions was the major league debut of Michael Fulmer, the Tigers' top-ranked prospect. Fulmer wasn't completely ignored; he has been added in 22 percent of the leagues on CBSSports.com, but his ownership rate is still a modest 35 percent. A good prospect with the Mets, Fulmer has been even more impressive since coming over to the Tigers last July in the Yoenis Cespedes deal, improving his control and getting more strikeouts. In nine starts across the Tigers' Double-A and Triple-A affiliates, Fulmer has a 3.26 ERA with 53 strikeouts and 12 walks in 47 innings. He was certainly not overmatched in Friday's major league debut against the Twins, allowing two runs with four strikeouts over five innings.

Owners may not be as enthused about picking up Fulmer because of a numbers squeeze in the Tigers' rotation. Fulmer was called upon to fill in for Shane Greene, and once Greene's blister has healed, he could take his job back from the 23-year-old. Daniel Norris was recently activated from the DL and optioned to Triple-A Toledo, but he could enter the rotation picture in the coming weeks as well. Then again, neither Mike Pelfrey nor Anibal Sanchez has been effective, so if Fulmer performs well, he could force his way into a more secure role.

To be sure, if Manaea or Snell is still available in your league -- and both are still unowned in more than one-third of CBSSports.com leagues -- they should be your first stops on the waiver wire. If both are spoken for, you probably won't find another free agent pitcher in a current starting role with as high of a ceiling as Fulmer.

Tyler Duffey, SP, Twins (7 percent owned)

The prospect bonanza has also helped some more established pitchers go under the radar, including Duffey. The Twins' righty should have drawn attention with Saturday's outing against the Tigers, as he allowed one run in 6 1/3 innings, striking out seven and getting 14 swings and misses. Instead, owners responded to his first start back from a shoulder contusion with a collective shrug.

Yet all Duffey has done is extend the string of solid starts he began last September. Of his last seven starts, going back to last season, the only one in which Duffey failed to record a quality start was this year's season debut, in which he was removed early after getting hit by a comebacker. Like Fulmer, Duffey's stay in the Twins' rotation could be temporary, but he has an opportunity to earn a permanent spot, even when Ervin Santana (back) and Kyle Gibson (shoulder) return.

Michael Saunders, OF, Blue Jays (34 percent owned)

Saunders is making the Blue Jays manager John Gibbons' decision to hit him leadoff look like a good one. Since being installed atop Toronto's batting order just over two weeks ago, Saunders has been hitting .318 with a .400 on-base percentage and 10 runs scored. His new role as a table-setter hasn't meant a loss of power, as Saunders has hit three home runs and four doubles over 50 plate appearances.

The Blue Jays have been a middle-of-the-pack offense so far this season, so it staggers the mind to think what could happen to Saunders' Fantasy value if the lineup suddenly hits a higher gear. It remains to be seen if Saunders can maintain this level of power, but as a patient hitter, he should continue to get on base and give himself a chance to score plenty of runs. That alone makes him someone for standard mixed Rotisserie owners to consider.

Hector Neris, RP, Phillies (14 percent owned)

Neris is enjoying a minor surge in popularity, and some of that may be due to him picking up his first save against the Indians on Sunday. He was merely filling in for an unavailable Jeanmar Gomez, who had pitched in four of the previous five games, though this save chance shows that Neris is next in line for ninth-inning duty. However, even if Neris were to never get another save opportunity, he is still worth picking up in any league where closers are scarce or good reliever ratios are a difference-maker.

Despite allowing eight home runs in 40 1/3 innings, Neris wasn't bad last season. But he has been downright nasty in 2016. At the behest of Phillies manager Pete Mackanin, Neris is throwing his splitter more frequently, and it's his best pitch for getting grounders and swings and misses. While Neris' 14 percent whiff rate from last year was excellent, he has built on that with a 21 percent rate that leads all pitchers with at least 10 innings.

Brandon Drury, 3B/OF, Diamondbacks (37 percent owned)

When Drury hit his fifth home run of the season on Sunday, he equaled his total from 130 minor league games last season. Drury's power spurt is not looking fluky, though. According to BaseballHeatMaps.com, only seven hitters are averaging longer distances on their flyballs, and he is averaging a greater launch speed and angle than the average major league hitter, per Statcast data. Also, it's not as if Drury was power-deprived in the minors. He hit 40 doubles last season and cracked 23 home runs in 2014, though 19 of those were in the power-heavy California League.

For now, Drury doesn't have an everyday job, but he is hitting enough to gain close-to-everyday at-bats. If this continues, he could become a regular in the Diamondbacks' lineup, much in the way that David Peralta did last season. It helps that Drury has played every position in the minors, other than pitcher, catcher and center field. Though his role is still uncertain, Drury's versatility and power potential make him a must-own in deeper mixed leagues and even a worthwhile add in standard mixed Rotisserie leagues.