James Vincent Michael O'Brien (born February 18, 1989), better known by his nickname Jomboy, is an American baseball commentator, podcast host, and internet personality.

He co-created the popular New York Yankees podcast Talkin' Yanks in 2017, and rose to wider prominence in 2019 with his viral "breakdown" videos, in which he examines notable sporting events in detail, often aided by his lip reading ability.

[11] O'Brien published more "breakdowns" of incidents in MLB and other sports with occasionally profane commentary and gained 300,000 YouTube subscribers after the Boone video.

[13][5] In the video, O'Brien showed the scheme playing out in real time in a game against the Chicago White Sox.

Whenever catcher Kevan Smith called for pitcher Danny Farquhar to throw a changeup, the sound of someone banging on a trash can in the Astros' dugout was clearly audible.

[5] In an interview with The New York Times, O'Brien described Jomboy Media's banter as "fun, not funny," and stated that, "the easiest way to get laughs sometimes is to knock other people down or go negative.