It's waiver time. One of the keys to any fantasy success is not only nailing your draft, but scouring that waiver wire for players who can give your team a boost. Even though fantasy baseball can be a really long season, it's key to scour those waivers and take it week-by-week to cement your fantasy status.

The four players below are all owned in fewer than 50% of Yahoo leagues and could give your team a lift as you start off the season. It's never too early to consider some adds and drops for your team.

Liam Hendriks - Oakland Athletics (RP)

Yahoo Ownership: 50%

If you are struggling with who Liam Hendriks is, the Aussie reliever has been one of the best pitchers in baseball recently.

And it looks like he may be the closer, as well, at least on an interim basis. We're always trying to search out the next man up for saves, and Hendriks looks to be the guy until Blake Treinen works his way back from injury.

And unlike some relievers, Hendriks contributes across the board. In 49 2/3 innings pitched this year, he's racked up 62 strikeouts while maintaining some juicy ratios.

Anibal Sanchez - Washington Nationals (SP)

Yahoo Ownership: 47%

Since the 24th of May, the Washington Nationals have surged their way to a 26-11 record thanks to names that are household commodities -- Max Scherzer, Sean Doolittle, Anthony Rendon, and Juan Soto. But one forgotten player is veteran right-hander Anibal Sanchez, who has provided some back-end stability to this rotation.

Since coming off the Injured List on May 29th, Sanchez is undefeated with a 5-0 mark and 2.18 ERA. The schedule has been kind -- games against the Chicago White Sox, Miami Marlins and Detroit Tigers -- but he's also twirled a gem against the Atlanta Braves in that span. He's also recorded five quality starts over that time, too.

With a very tough year so far across the board in pitching, Sanchez is an under-owned player who you should consider to help your staffs. His recent performance makes him more than just a streamer.

Christian Walker - Arizona Diamondbacks (1B)

Yahoo Ownership: 23%

After a torrid start to the 2019 season, Christian Walker cooled off, but he's been picking up steam in the last week or so.

While Walker has always had some serious pop, there's a variety of reasons to believe that his recent changes could be sustainable. His walk rate, for example, is the highest of his career, at 8.8%. And his hard-hit rate currently sits at 49.8%. He's not only showcasing great plate discipline, but when he makes contact, he is smashing the baseball.

If you need some power, check out Walker.

Kevin Kiermaier - Tampa Bay Rays (OF)

Yahoo Ownership: 18%

Speed kills, and it's a category that you never feel like you can get enough of. The problem is that steals is often dominated by players like Terrance Gore, Jarrod Dyson, and Mallex Smith -- guys who will contribute to your stolen bases, but unfortunately, they don't offer much else.

Enter the center fielder for the Tampa Bay Rays, Kevin Kiermaier, who gives you a little bit of everything. On the year, he has hit double-digits in both home runs (10) and stolen bases (15). Over the past 30 days, KK has provided four long balls and five steals.

Just because Kiermaier isn't heavily owned doesn't make him a bad purchase as a depth piece who can help in a few categories when you start him.