It’s still relatively early in the season, so I hesitate to go all-in on hitter splits. I’m much more on board with pitcher splits. The key pitcher stats — walks and strikeouts — stabilize sooner (meaning they represent at least half skill). Pitchers can course correct in seemingly countless ways — refining a pitch, changing pitch usage, changing where they stand on the rubber, gaining some RPMs, tunneling pitches better, not tipping pitches, being more aggressive in the strike zone, etc. Hitters conversely are prisoners of their skill level to a much larger degree, so smaller sample sizes don’t have as much predictive juice.Still, we have a sample, and I want to know which hitters are hot and which are not over the past month, despite the season still being a few weeks away from its midpoint. With hitters who don’t have many season stat lines on the back of their baseball cards (full disclosure: I write the baseball cards), these splits are much more actionable, and we have a few of those types.We all look at last-28-days splits (past month) on our waiver pages, or at least we should. Those are actual stats. I don’t care so much about them. We’re concerned with expected stats and, via Statcast/Baseball Savant, I’m focusing on the stat that puts all the hitting skills into one big bucket — Expected Weighted On-Base Average (xwOBA). The average xwOBA right now is .316. I’m looking for hitters who are about 50% rostered or less in Yahoo leagues and who have an xwOBA since May 11 of at least .350 (about the upper-third of the population of 120 qualifying hitters). I’ll also mention the hitters who are rostered in about 90% of leagues but whose xwOBA is under .300 for the past month, which falls below the 20th-percentile cut line.* Stats are through June 10. Hot, moderately rostered hittersCarson Benge, OF, NYM (47% rostered): He’s produced the 18th-best xwOBA for the past month (out of 120 qualified hitters). Benge has been solid in reality but should have been a little better: .313 xBA and .536 xSLG in the period. He is also a source of speed and bats leadoff ahead of one of the game’s best hitters (Juan Soto — fourth-ranked in the period).