Normally, nothing, but this year, it marks the point when only 45 days remain in the regular season, thus ensuring that a first-time call-up will retain his rookie eligibility for next season. You should know how this works by now.

It was first reported by Jesse Rogers of ESPN that top prospect Owen Caissie is being called up by the team for his Major League debut, potentially as early as Thursday. If the Canada native does get the chance to be in the lineup tonight, he would get to make his debut in his home nation.

The Chicago Cubs are bringing up their top prospect, outfielder Owen Caissie, from Triple-A Iowa, according to reports. The 22-year-old from Burlington, Ontario, will make his major league debut Thursday afternoon at Rogers Centre against the Toronto Blue Jays, just 30 miles from where he grew up.