Finding the perfect additions to your Fantasy baseball team via the waiver wire is the key to winning in any Fantasy league, but if it were easy, anyone could do it. And if you're searching for a hitter to round out your Fantasy baseball lineup, you absolutely need to see what SportsLine's Fantasy expert Alex Chamberlain has to say.

Chamberlain is a 5-time Fantasy Sports Writers Association award finalist and was recognized as 2015's Newcomer of the Year and 2018's Fantasy Baseball Writer of the Year. He competes in Tout Wars and contributes (other) work online at RotoGraphs and in print in Lindy's Sports annual Fantasy Baseball magazines. Previous bylines include Baseball Prospectus and Rotoballer. If there's anybody who knows what it takes to win a league, it's him.

Now, he's done an in-depth analysis of the top hitters who are widely available entering Week 19. 

One we'll give away: Chamberlain is high on Rockies OF/1B Ian Desmond, who's owned in just 48 percent of leagues.

"Desmond doesn't run anymore, but his improved contact skills are fully validated by Statcast, suggesting he has another 10 home runs in the tank in addition to a modest-but-not-terrible .260/.320/.450 type of line," Chamberlain said. "With first base options dropping like flies, Desmond's health makes him serviceable in deep leagues and at least rosterable in all but the shallowest."

Chamberlain has also identified which hitters you should target on waivers if you need a jolt for your squad, including a must-add prospect you need to be all over. Anyone who adds this player could hit it BIG.

So which hitters should you target on the waiver wire? And which prospect is a must-add selection? ... Join SportsLine right now to see the best league-winning free agents, all from one of the most respected voices in the industry!