Baseball America's Midseason Top 25 Prospects Update is coming next week. Last year's list sparked plenty of debate and holds up well. We're gathering a lot of the information now for this year's list, and one piece of bad news may have an impact on the rankings.

The Atlanta Journal-Constitution reports that Braves righthander Arodys Vizcaino, recently promoted to high Class A Myrtle Beach, will miss at least six weeks with a partial ligament tear in his elbow. However, Vizcaino will not require surgery, obviously a good sign. Instead, he's headed to Florida for rehabilitation.

Vizcaino, 19, would have figured prominently into the discussion of the best pitching prospects in the minors, and still does since he hasn't required surgery. However, he has thrown 83 innings this year, just shy of his career total coming into the season, and the Dominican Republic native has yet to show he can go a full season and stay healthy. He missed time in 2009 while in the Yankees organization due to a muscle strain in his back.

In other tidbits:

• International signing day is tomorrow (have you noticed our countdown clock?), and it's always fascinating to see the range of scouting opinion on players signed during the period. Last year, when the Rangers signed Jurickson Profar, BA's Ben Badler wrote of how many teams liked Profar as much, if not more, on the mound as they did as a position player.

The Rangers have been adamant that Profar will hit and have started him off as a shortstop. They've placed him on the Martin Perez Fast Track, starting the switch-hitting 17-year-old at short-season Spokane. So far, so good—Profar had just his second hitless outing in 11 games Wednesday night, is hitting .277/.292/.404 through 47 at-bats and has yet to make an error.

• Seven-foot-1 Twins righthander Loek Van Mil and 6-foot-11 Yankees righthander Andrew Brackman are both Eastern Leaguers now. While Brackman probably could take Van Mil in the post—seeing as how Brackman played college basketball while Van Mil wears t-shirts proclaiming, "No, I don't play basketball"—Van Mil has been more impressive on the mound as a pro. They pitched off the same mound last night in a 5-3 Double-A New Britain victory, with Brackman taking his second loss in as many starts for Double-A Trenton.

Meanwhile, Van Mil got four outs in relief of 2009 Twins first-rounder Kyle Gibson, who got the victory. Van Mil, 25, is getting his first extended run at Double-A after finishing with eight outings at the level last season. He's given up 18 hits in 12 2/3 innings for the dismal Rock Cats, who are 22-57. However, one scout said earlier this season he saw Van Mil registering 97 mph with his fastball while reaching the upper 80s with his slider. The Netherlands native is on the Twins' 40-man roster.