The 20th Arizona Fall League season starts Tuesday, with the Angels — along with the Giants, Nationals, Phillies and Red Sox — sending prospects to make up the Scottsdale Scorpions. The Rising Stars Game is Nov. 3 (Salt River Fields at Talking Stick) and the championship game for the six-team league will be Nov. 17 (Scottsdale Stadium).

Last year, Mike Trout played in this event. This year, Randal Grichuk — who’s known mostly for being drafted a spot before Trout but has quietly put together a nice season — is going. Nick Maronde was going to go, but since he missed the early part of the year with a strained lat muscle and he pitched through September, the Angels decided that he hold off. Veteran-ish reliever Bobby Cassevah is taking his place.

The one to watch here, though, will be 20-year-old third baseman Kaleb Cowart, who became the Angels’ top-ranked prospect after a solid A ball season. Below is the full slate of Angels representatives. Carlos Ramirez is on the taxi squad, which means he’ll only be activated Wednesdays and Saturdays. Brandon Emanuel, pitching coach for Class A Inland Empire, is part of the Scorpions’ coaching staff.

LHRP Buddy Boshers

Draft: 4th round, 2008
Age: 24
2012 (A+,AA): 2.98 ERA, 45 G (11 GF), 63 1/3 IP, 10.7 K/9, 3.0 BB/9, 1.25 WHIP
Career (5 seasons): 3.81 ERA, 150 G (34 GS, 26 GF), 324 IP, 8.5 K/9, 3.3 BB/9, 2.56 WHIP
MLB.com prospect rank: Unranked

RHRP Bobby Cassevah

Draft: 34th round, 2004
Age: 27
2012 (A+, AAA): 5.79 ERA, 49 G (18 GF), 51 1/3 IP, 5.6 SO/9, 3.7 BB/9, 1.66 WHIP
Career (8 seasons): 4.53 ERA, 268 G (14 GS, 96 GF), 401 2/3 IP, 6.1 SO/9, 4.5 BB/9, 1.59 WHIP
MLB.com prospect rank: Unranked
Cassevah isn’t what you would call a prospect, by any stretch, combining to make 46 appearances in the Majors from 2010-11 (posting a 2.87 ERA and a 1.30 WHIP). But he began the season on the disabled list with shoulder inflammation and never quite got right throughout the year — making four appearances in the Majors and struggling mightily in the PCL — which is probably why he wants to get more work in this fall.

RHRP Ryan Chaffee

Drafted: 3rd round, 2008
Age: 24
2012 (A+, AA): 2.60 ERA, 55 G (21 GF), 65 2/3 IP, 11.5 SO/9, 4.9 BB/9, 1.17 WHIP
Career (4 seasons): 5.36 ERA, 132 G (58 GS, 27 GF), 393 IP, 8.8 SO/9, 4.6 BB/9, 1.47 WHIP
MLB.com prospect rank: Unranked

RHRP Kevin Johnson

Drafted: 20th round, 2010
Age: 24
2012 (AA, AAA): 3.69 ERA, 56 G (41 GF), 18 SV, 63 1/3 IP, 4.4 SO/9, 2.3 BB/9, 1.39 WHIP
Career (3 seasons): 4.34 ERA, 121 IP (10 GS, 72 GF), 193 IP, 6 SO/9, 3.2 BB/9, 1.48 WHIP
MLB.com prospect rank: Unranked

C Carlos Ramirez

Drafted: 8th round, 2009
Age: 24
Bats: Right
2012 (AA): .204/.312/.276, 2 HR, 23 RBI, 85 G
Career (4 seasons): .269/.371/.416, 25 HR, 134 RBI, 291 G
MLB.com prospect rank: 19th on Angels
Prospect report: Ramirez still has some things to work out offensively, as his numbers haven’t shown much consistency from league to league. Though he’s notched a very respectable average across four levels, the disparity between his performance in the hitter-friendly California League and each of his other stops leaves some room for concern. Ramirez is a strong defensive backstop, knows how to handle a pitching staff and has the makeup that should allow him to be an everyday catcher. If the bat doesn’t come around, his glove could land him a job as a backup at the highest level.

3B Kaleb Cowart

Drafted: 1st round (18th overall), 2010
Age: 20
Bats: Switch
2012 (A, A+): .276/.358/.452, 16 HR, 103 RBI, 14 SB, 135 G
Career (3 seasons): .275/.349/.437, 24 HR, 150 RBI, 25 SB, 214 G
MLB.com prospect rank: 1st on the Angels, 46th overall
Prospect report: Cowart is a switch-hitter with a lot of bat speed that generates plus raw power from both sides of the plate. He started tapping into that power more consistently as he’s started to mature and learn the strike zone better. He’s athletic and has decent speed, which should help him stay at third long term. So will the plus arm that made him a legitimate pitching prospect in high school. He handled full-season ball well, earning a promotion from Class A to the Class A Advanced California League in June.

OF Randal Grichuk

Drafted: 1st round (24th overall), 2009
Age: 21
Bats: Right
2012 (A+): .298/.335/.488, 18 HR, 71 RBI, 16 SB, 135 G
Career (4 seasons): .296/.331/.507, 39 HR, 195 RBI, 26 SB, 305 G
MLB.com prospect rank: 12th on the Angels
Prospect report: Grichuk may forever be paired witih the other high school outfielder taken by the Angels in the first round of the 2009 Draft. What that outfielder, Mike Trout, has done, speaks for itself, but Grichuk has had a harder time moving up the ladder, largely because of injury issues. Grichuk was actually taken one slot above Trout, but 2012 was his first season with more than 300 at-bats. When he’s healthy, he’s shown glimpses of the pop that made him a first rounder along with some base-stealing acumen. He needs more time to work on the holes in his swing, but he’s still young enough to tap into that raw power and be a run-producing corner outfielder, taking a positive step forward in 2012.

CF Travis Witherspoon

Drafted: 12th round, 2009
Age: 23
Bats: Right
2012 (A+,AA): .268/.350/.418, 13 HR, 48 RBI, 34 SB (11 CS), 121 G
Career (4 seasons): .264/.332/.417, 42 HR, 171 RBI, 110 SB, 373 G
MLB.com prospect rank: 7th on the Angels
Prospect report: Witherspoon has lots of tools and the potential to be an above-average everyday player when everything comes together. He has a solid arm and plus speed, and he knows how to run a route, making him an excellent defender in the outfield. On the other side of the ball, he has the strength and bat speed to hit for power but still has work left to do in taming his aggressive approach. He’s also a plus runner with good instincts and can do some damage on the basepaths, especially if he continues to develop patience and makes more contact at the plate. Witherspoon was promoted to Double-A Arkansas on June 20. He was placed on the disabled list on July 3, with a left quad strain.