What happened: The Chicago White Sox are selecting UCLA shortstop Roch Cholowsky with the No. 1 overall pick in the MLB Draft, sources tell ESPN's Jeff Passan. The pick comes a day after reports that Chicago was weighing other names for the top slot.

Why it matters: The selection settles days of speculation over the top pick and gives the White Sox a shortstop as the headline piece of an active draft day. Chicago also traded infielder Jacob Gonzalez and reliever Brandon Eisert to the Pirates for the No. 34 pick as part of the same draft.

What to watch: The MLB Draft continues, with Chicago holding the No. 34 pick acquired from Pittsburgh. The White Sox, 48-45 this season, are scheduled to host the Athletics, who arrive on a seven-game losing streak.