ST. LOUIS — David Robertson became the first Cub dealt on trade deadline day.

Two hours before the deadline, Robertson was dealt to the Phillies for pitching prospect Ben Brown, their 7th overall prospect, per Baseball America.

Robertson had been stellar for the Cubs this year, pitching to a 2.23 ERA, a 1.041 WHIP and racking up 14 saves. The Cubs signed the 37-year-old in Spring Training and he won the team’s closer role out of camp.

In dealing Robertson, the Cubs sold high on a 37-year-old veteran reliever who returned from Tommy John surgery in 2021, pitched for Team USA in the Olympics last year and made 12 regular-season appearances and 3 postseason appearances with the Rays. With the lockout and the birth of his third child leading to a shortened Spring Training, Robertson found a unique way to build up for the 2022 regular season.

Robertson also notched his first career MLB plate appearance in June, fulfilling a lifelong dream.

In return, the Cubs get a 22-year-old prospect that has a pair of fastballs that reach 94-97 mph and an 84-87 mph slider.

Brown had just been promoted to Double-A Reading on Monday and had struck out 35.4% of batters in High-A. With High-A Jersey Shore, Brown posted a 3.08 ERA and opponents hit only .197 off of him.

Here’s a glimpse at what Brown brings to the Cubs’ system: