Whether you're in need of an injury fill-in or just a hot-hand play, Scott White has you covered with 10 sleeper hitters for the upcoming scoring period, all rostered in less than 80 percent of CBS Sports leagues. They're not must-starts by any estimation, but they're often the best you'll find off the waiver wire.

Be sure to check back Sunday for the latest updates.

Best hitter matchups for Week 4

1. Astros @SEA1, COL3, STL3
2. Pirates WAS4, TB3
3. Guardians @STL3, BAL4
4. White Sox TB3, @ATH3
5. Yankees LAA4, KC3

Worst hitter matchups for Week 4

1. Cubs @PHI3, NYM3
2. Brewers TOR3, @MIA3
3. Tigers KC3, @BOS3
4. Diamondbacks @BAL3, TOR3
5. Mariners HOU1, @SD3, TEX3