Watch Top A's Prospect Sean Murphy Smash Huge First Homer in MLB Debut

September is a month of firsts in Major League Baseball.

With rosters expanding on Sept. 1, players around MLB make their big league debuts, record their first hits and even hit their first home runs during the month. 

A's catcher Sean Murphy, Oakland's No. 3 prospect in MLB Pipeline's estimation, did all three Wednesday night against the Los Angeles Angels at the Oakland Coliseum.

First Major League game ✅
First Major League hit ✅
First Major League homer ✅ pic.twitter.com/q0Fpu8T3ww— A's on NBCS (@NBCSAthletics) September 5, 2019

Murphy struck out swinging on four pitches in his first big league at-bat in the second inning. He stepped up to the plate for his second at-bat of the game in the fifth, crushing Angels reliever Jake Jewell's 95.3 mph fastball 409 feet to right center. 

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The 24-year-old clubbed 10 home runs in 31 Triple-A games this season, but Wednesday's dinger could be the one he remembers most from 2019 when he looks back on his career. It helps to have your family in attendance, after all.

Look at the Murphy family celebrate Sean's first MLB homer.#RootedInOakland pic.twitter.com/C1wujKPBtK— Brodie Brazil (@BrodieNBCS) September 5, 2019

That's hard to beat.