While with High Point, Halbohn, 27, appeared in 15 games with a stellar 1.89 ERA, fanning 16 batters in 19 innings. With Chicago, he filled the closer role position and spun a spectacular 1.98 ERA in 36 games while notching 14 saves. That save total marked his highest in a season since recording 10 saves at Belmont Abbey College, in Belmont, North Carolina, in 2016.
While Alfonzo struggled during the first part of last year, hitting .218 at the all-star break, the 27-year-old turned it on in the second half, batting .282 the rest of the way, despite missing some time in August with an injury.
High Point Rockers have nine former Major Leaguers on their roster.
Bryan Harper enters second year since Tommy John Surgery.