Finding the perfect addition to your Fantasy basketball team via the waiver wire can be the difference between winning your league or going home with nothing. And before you determine which players you should target on the waiver wire this week, you absolutely need to see what SportsLine's NBA Fantasy expert Mike Barner has to say.

Barner is one of the most respected voices in the industry, whose work has appeared in Sports Illustrated and on Yahoo, RotoWire and KFFL. He's also been featured on ESPN Radio. He digs deep into the data, examining team trends and projecting game outcomes. If there's anybody who knows what it takes to win a league, it's him.

Now, he's revealed the best widely available free agents ahead of Week 19. One player Barner is advising Fantasy players to target on the Week 19 waiver wire: Mavericks guard Jalen Brunson, who is available in over 60 percent of leagues.

"The Mavericks have their sights set on a lengthy playoff run, so it wouldn't be a surprise to see Luka Doncic and/or Kristaps Porzingis get a game or two off for rest," Barner said. "Porzingis also suffered an ankle injury Thursday, which makes him uncertain moving forward. Brunson has already been one of the leaders of their second unit, averaging 12.8 points, 3.6 rebounds, 3.5 assists and 1.2 three-pointers while shooting 53.0 percent from the field. He could be in line for a busy week."

Barner has also identified which other players you should target on waivers if you need a jolt for your squad, including a guard available in 55 percent of leagues who is playing for a team with an extremely favorable schedule. Anyone who adds this player could hit it BIG.

So which players should you target on the Fantasy basketball waiver wire in Week 19? And which overlooked guard could lead your team to victory this week? ... Join SportsLine right now to see the best league-winning free agents, all from one of the most respected voices in the industry!