Waiver Watch: Wednesday Edition

Here are the must-add players in season-long fantasy leagues:

OF Melvin Upton Jr., San Diego Padres

Every fantasy baseball manager has fallen for, drafted, and dropped Upton at some point over the past three seasons. Despite eclipsing 30 stolen bases fives times and three seasons with at least 20 home runs, Upton has struggled to put together the full package since stealing 31 bases with 28 homers with the Rays in 2012.

Now in his second season in San Diego, Upton is being called on to spark an anemic offense. He has batted fourth or fifth in his last eight starts, so he's going to be in a position to drive in runs.

His .298 BA won't last. Upton is a career .245 hitter, and his current rate is propped up almost entirely by a 30.6 percent line drive rate. His OBP has always been around 70 to 80 points higher than his BA, so even when adjusting for regression, he could still finish the season with a respectable .340 OBP.

Above all, the biggest attraction are the steals. He had just nine SB in 87 games in 2015 but already has four in 14 games in 2016. Only seven players finished with at least 30 steals in 2015; if Upton continues stealing at this pace, and sees the number of plate appearances he averaged from 2012 to 2014, he could finish in the high-30s in steals.

SS/3B Eduardo Nunez, Minnesota Twins

Nunez was glued to the bench to start the season but an injury to starting 3B Trevor Plouffe (and the struggles of OF Byron Buxton as the lead-off man) have given the backup an everyday role in the lineup.

In five games batting lead-off, Nunez has nine hits (including a triple and two doubles), six runs, two steals and just three Ks and one walk. His 5.4 percent walk rate for his career isn't a great fit at the top of the order but the experiment has worked so far, and for a team desperate for run production and facing some injury woes, they might as well go with the hot hand.

Most formats will have Nunez eligible at third and shortstop and with a start at 2B, there's a chance he gets eligibility there as well by mid-season. His versatility will give his owners some flexibility when setting daily lineups. He's worth a look to see if he can hold onto his role when Plouffe returns.

RP Alex Colome, Tampa Bay Rays

When Rays closer Brad Boxberger was put on the DL to start the season, manager Kevin Cash said that save opportunities would be handled by committee, which is really the last thing any fantasy player wants.

And yet, Colome has two saves in two tries and has finished five games overall, leap-frogging one-time Mariners closer Danny Farquhar into being Tampa Bay's primary high-leverage reliever. Colome is one of the better options for cheap save at the moment.

With eight strikeouts in 6 2/3 innings, Colome should be able to stake himself to five or six more save opportunities before any potential return by Boxberger. Even when the incumbent returns, there's no guarantee he keeps his role given how he pitched down the stretch in 2015, posting a 4.33 ERA in the second half.