The Twins are playing well right now and so are their affiliates. A quick glance at milb.com shows that Rochester and Chattanooga are leading their divisions, Cedar Rapids is leading for a playoff spot and Fort Myers is playing .500 ball. Even better news is that several players are showing that they should be promoted and many are waiting in the wings for recall to the Twins. Here are some players and their cases for getting a call to the big leagues. Casey Fien-He is on minor league rehab. Fien has been a solid member of the bullpen, and barring a medical setback, he will be pitching for the Twins before their current homestand is over. Tommy Milone-Milone was sent to the minors after four starts-one great, two so-so and one bad. He has been terrific pitching for the Red Wings. He is 4-0 with a microscopic 0.28 ERA. He allowed only one earned run and 20 hits in 31.2 innings, with two walks and 41 whiffs. Any pitcher would be proud of those numbers. Any injury or struggle by a starter should result in a recall to Minnesota for the soft-tossing left hander. Lester Oliveros-The hard-throwing 26-year old Venezuelan has terrific numbers at Rochester. He is 2-0 with a 1.86 ERA, a 0.98 WHIP, 6 BB and 30 (!) Ks. Oliveros isn't on the 40-man or he may already be with the Twins. AJ Achter-He is the current closer for Rochester. His numbers are very good: 3-2 with 2.29 ERA, 0.61 WHIP, 5 BB and 16 Ks. Both Oliveros and Achter seem to be better alternatives than the residents of the current Twins' bullpen. Caleb Thielbar- If the Twins wanted to replace a left hander in the 'pen, I suppose the Minnesotan would be in line. His minor league topline is good: 2-1 with a 1.50 ERA, but he's allowed 13 hits and 11 walks in 12 innings for an unsightly 2.00 WHIP. Kennys Vargas-The big DH was surprising sent to Rochester last week. Since reporting, he has hit well. The only problem would be finding a spot on the roster and playing time for a young bat-only player. He's 8-19 with two homers and five RBI since reporting to Rochester. Josmil Pinto-He was thought to have the inside track to make the Twins out of spring training, but was set back by injuries. Pinto has displayed a good bat in his time with the Twins. Right now, his production at Rochester is less than stellar. He's hitting only .259 with 4 homers and 20 RBI. Pinto's work behind the plate has always been the major question. Minor league stats don't give us much of a clue as to his improvement as a defender. Eric Fryer-Always thought of as a backup who calls a good game and is reliable behind the plate, Fryer has, in a small sample size, exceeded Pinto's offense. In 70 ABs, he's hitting .343 with an OPS of .811. In addition to these players, two more position players will likely be coming to Rochester on injury rehab. Both Owaldo Arcia and Jordan Schafer were starters for the Twins when the season started. Neither is assured of that role when they return from their injuries. Starting pitchers Pat Dean and Taylor Rogers have put together numbers that could merit promotion most years, but the Twins have a logjam of competent starting pitching at this time. I don't believe I just wrote that! Finally, Chattanooga has a host of players that probably will get promoted by sometime in the second half of their season and a couple could find their way to Minnesota. Mega-prospects Byron Buxton (.267 BA, .829 OPS, 11 (!) triples), Miguel Sano (.248 BA, .851 OPS, nine homers), and JO Berrios (5-2 2.89 ERA, 63 K, 1.16 WHIP) have all gotten much attention (and deserve it), but many other players are doing well, including Adam Brett Walker, Travis Harrison, Max Kepler, Jorge Polanco, and Zack Jones. Sano, Kepler, and Polanco are on the 40-man.