On paper, the New York Yankees’ struggling lineup received the ultimate boost when the club activated Aaron Judge from the injured list Monday night.In reality, there are questions Judge and the Yankees will need to answer, starting Tuesday night when he rejoins the team versus the Colorado Rockies at Yankee Stadium.Here are three things we’re wondering:What’s the plan?The Yankees likely won’t use Judge at full speed right away. It has been 100 days since No. 99 has been in a major-league lineup, as he recovered from fracturing his first right rib while diving to make a catch. He attended the U.S. Open on Monday night, meaning he’s watched more live tennis matches (at least one) than he’s played rehab games (exactly zero). It was Judge’s choice to skip rehab games. On Aug. 27, he told reporters, “Why waste at-bats?”“Why waste anything down in a minor-league game? I’ve been doing this for a while now, and I’ve got a sense of what I need to do on the field and how to manage it.”Will Judge spend Tuesday as a designated hitter? Could the Yankees give him essentially a spring training plan on fast-forward, playing him in right field five innings for a couple of games, then seven innings for another few and then progress to full games? Everything seems to be on the table.How will manager Aaron Boone use Aaron Judge as he reacclimates to the major leagues? (Julian Leshay Guadalupe / USA Today Network via Imagn Images)Saturday, Yankees manager Aaron Boone told reporters Judge was “in a good spot.”“He’s physically to the finish line,” the manager said, “where he needs to be. But it’s about just doing it a lot, because that’s ultimately what you’re trying to replicate is being out there for nine innings where you’re playing for three hours and sit down, get up — those kind of things. Just replicating that. So we’re getting to that point with the volume.”How ready is Judge?Physically, Judge and the Yankees feel he’s prepared to face big-league pitching and play right field at Yankee Stadium.But how quickly will Judge shake off his rust?The 34-year-old has taken steps to get back to game speed, even facing live pitching at Yankee Stadium on Monday afternoon. Judge faced a righty and a lefty, according to video posted by MLB Network. He also stood at the plate with Max Fried on the mound Wednesday at Angel Stadium. Before the Yankees’ recent trip, he hit off the Trajekt high-velocity pitching machine, which uses a video board to simulate deliveries from major-league pitchers.