We are deep into the second half of the fantasy season, and roster decisions made this week could be the difference between a playoff run and watching from the outside. The waiver wire is not as splashy as it was in April, but there are real opportunities hiding in depth charts, especially with Arizona dealing with some notable personnel shuffles. PlayCaller's beat reporters have been flagging several situations worth acting on right now. Here are the players you should be targeting heading into Week 20.
This is the headline pickup of the week. Nolan Arenado was pulled from Tuesday's game with right groin tightness and is expected to sit for at least two days, with a team off day Thursday conveniently padding that absence. Fernandez stepped into the lineup at third base and is the direct beneficiary of whatever time Arenado misses. Groin injuries have a way of lingering, so Fernandez could see a full week or more of everyday starts. Pick him up in all formats while his floor is elevated.
On the flip side, do not drop Arenado if you own him. The groin tightness is rated medium severity and he is getting rest rather than undergoing any imaging or procedure. The built-in off day Thursday gives the Diamondbacks a natural buffer to be cautious, and Arenado should be viewed as a strong candidate to return over the weekend. Hold your spot if you have the roster flexibility.
Smith began a rehab assignment in the Arizona Complex League this week after missing time following elbow surgery. He is not yet back on the active roster, but PlayCaller's beat reporter signal on Smith indicates he will contend for starts against right-handed pitching at both first base and designated hitter once activated. If your league uses two-week injured list holds, stash Smith now before he generates buzz at the big league level. He fits well in deeper leagues and two-catcher or multi-position formats.
Puk tossed a perfect inning with a strikeout in his first rehab appearance in the Arizona Complex League. He will need to progress through at least one higher affiliate before rejoining the Diamondbacks bullpen, so this is a pure stash. However, Puk has the stuff to be a high-leverage arm when healthy, and bullpen roles in Arizona are fluid enough that he could slot back in quickly once he is cleared. Grab him in leagues with at least 15 teams or where reliever scarcity is already a concern.
Semien has quietly posted three consecutive multi-hit efforts heading into this week and his stolen base numbers have ticked upward over the past month. With the Rangers playing seven games in six days this week, he is set for maximum exposure and should be owned in all formats above 10 teams. If he is somehow sitting at 70 percent ownership or below on your platform, grab him immediately.
Alvarez is healthy and Houston enters a stretch of favorable pitching matchups through the weekend. He has been running a hard-hit rate above 55 percent this month and is one of the safest floor plays available on the wire. If roster churn has left him unowned in your league, this is a week to correct that mistake.
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