"Got a good report on Nolan. Heard he looked real good," Weiss said. "You never know how guys are going to show up after missing that much time, but he jumped right in and performed well last night."
The Sky Sox will be home until Thursday, and Arenado has said he hopes to be back with the Major League club for its series opener against the Dodgers on Thursday.
Would Weiss possibly push for Arenado to make a return sooner, during this week's series in Washington?
"That one's probably over my head with the medical staff," Weiss said. "But if he gets two hits and two RBIs every night on the rehab assignment, I'll push for it."
A return would allow Arenado to make one last push for a spot the All-Star Game. He led National League third baseman in the initial ballot update released by Major League Baseball but was fifth in the most recent update after missing time with the injury. But he trailed leader Aramis Ramirez by only 260,000 votes, and the team has restarted a campaign to push for the third baseman to make the team.
Fans can cast their votes for starters at MLB.com -- online or on a mobile device -- using the 2014 All-Star Game MLB.com Ballot Sponsored by Experian until Thursday at 9:59 p.m. MT. The 2014 All-Star Game will be played at Target Field on Tuesday, July 15, on FOX.
Regardless of whether Arenado makes the trip to Minneapolis, Weiss is excited to have him back in the clubhouse in Denver, where the Rockies have hit a rough patch.
"It'll be big. Nolan brings a lot of passion, energy and youthful exuberance to our club, and probably the best third baseman I've ever seen," the manager said. "All those things mean a lot to our club, and it'll be good to have him back."
Caitlin Swieca is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.