Nationals 2007 first-round pick Ross Detwiler was promoted to high Class A Potomac and is scheduled to make his Carolina League debut on Thursday at Frederick.
Detweiler, the sixth overall selection in June’s draft, went 0-0, 2.25 in four starts during his professional debut with the organization’s Gulf Coast League affiliate. He struck out 15 and walked three over 12 innings.
Detwiler’s final GCL start was arguably his finest, going four innings while yielding two hits and two walks and striking out five.
Detwiler joins 2006 first-round pick Chris Marrero’"the organization’s highest-touted prospect’"at Potomac. Marrero is hitting .279/.353/.455 with six homers and 26 RBIs in his first full pro season.