The Philadelphia Phillies have won only three of nine games since the All-Star break. While the 3-6 record stings, the analytical profile behind those losses predicts more trouble ahead. The surface numbers—a .236 team average and .308 on-base percentage—are bad. The advanced metrics suggest the outcomes are entirely deserved.
Phillies freefall after All-Star break reveals plate discipline flaws
Let’s start with the swing decisions. The Phillies have struck out 851 times, third-most in the National League. Kyle Schwarber leads the charge with a 31% strikeout rate, but his chase rate has spiked to 34% since the break. Trea Turner has expanded the zone on 32% of pitches outside the strike zone, up from 28% in the first half. When you chase more and whiff more, the on-base percentage plummets. Philadelphia ranks 26th in OBP. That is poor plate discipline, not bad luck.
The power drop tells another story. The Phillies slug .399 as a team, ranking 16th, but the expected slugging (xSLG) based on exit velocity and launch angle sits lower. Bryce Harper posted a .515 xSLG in April, but that number has dipped to .455 since the break. Opposing pitchers have attacked him with high fastballs outside the zone, and he has chased 38% of those offerings. Without Harper providing thump in the middle, the lineup loses its teeth.
Consider the 1-0 loss to the Yankees on July 24. The Phillies recorded six hard-hit balls—defined as 95 mph or higher—but produced a .080 expected batting average on those specific plays because they found gloves. However, overall exit velocity on the season sits at 87.3 mph, below the league average of 88.1 mph. The Phillies are not barreling the baseball at a sustainable rate.
The situation with runners in scoring position exposes the clutch deficit. Philadelphia is 1-for-12 in the Yankees series with runners in scoring position, with a whiff rate of 41% in those high-leverage at-bats. They are pressing, expanding the zone, and rolling over pitches. Nick Castellanos has a chase rate of 39% with RISP, leading to weak ground balls and a .180 average in those spots.
Manager Don Mattingly correctly noted the offensive stagnation, but the data points to systemic flaws rather than a temporary slump. The Cubs and Braves have capitalized on these holes. Chicago has a +52 run differential compared to Philadelphia’s -10. Atlanta has turned a two-game lead into a 5.5-game margin because their hitters control the zone while the Phillies chase.
The trade deadline offers a chance to add a bat, but internal adjustments are more critical. Until the Phillies lower their chase rate and elevate their average exit velocity, the Phillies freefall after All-Star break will continue. The analytics scream regression. The standings reflect it.
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