<p>Pete Crow-Armstrong is just 101 days beyond his 24th birthday, a reminder of the extraordinary impact the Cubs center fielder already has made on this 150-year-old franchise in a brief time.</p><p>Now that he has been named the National League’s Player of the Month, with a performance in June that evoked comparisons to all-time greats (hello, Babe Ruth and Lou Gehrig), has Crow-Armstrong raised the bar on what he is capable of in the future?</p><p>“It’s a good question,’’ Cubs president of baseball operations Jed Hoyer said. “I think we saw him last year go on kind of a home-run, stolen-base barrage, a little bit earlier than this time of year last year, but that part of it doesn’t make me think differently.</p><p>“I think what makes me think differently is the walks and the approach at the plate. I told him the other day, his at-bat against [San Diego’s Adrian] Morejon was the best at-bat I’d ever seen him take.