BaseballMLB White Sox return Matt Foster to Class AAA Charlotte By MLB Editor - July 19, 2021 0 244 FacebookTwitterPinterestWhatsAppLinkedinReddItEmailPrint CHICAGO – Following tonight’s game vs. Minnesota, the Chicago White Sox returned right-handed pitcher Matt Foster to Class AAA Charlotte. Foster served as the 27th player for today’s doubleheader and allowed one run in 2.0 IP in the nightcap.