Next week, there is baseball. Well, baseball players taking batting practice and playing catch. Pitchers and catchers report to Clearwater on Feb. 17. This week we've previewed all 65 players in camp, starting with 40-man roster players.

Today, the non-roster invitees. (Earlier this week, we previewed outfieldersinfieldersstarting pitchers, and relief pitchers.)

RHP Mark Appel
Few players are more intriguing than Appel; talented enough to be twice drafted in the top eight picks, but a disappointment since.

RHP Andrew Bailey
Injuries have derailed what once was a promising career for the erstwhile closer. Now, a chance with his hometown team.

RHP Zach Eflin
His spring performance could decide whether he repeats double-A Reading or moves up to a crowded triple-A rotation.

RHP Ernesto Frieri
His average fastball velocity dropped by 3 mph last season, and he threw the pitch less than ever. Red flags everywhere.

RHP Frank Herrmann
The 31-year-old reliever who has an economics degree from Harvard has not pitched in a major-league game since 2012.

RHP Greg Infante
He has some experience as a minor-league closer, but walks are a huge problem for the 28-year-old reliever.

RHP Chris Leroux
The Canadian is back for another season as a swingman for triple-A Lehigh Valley.

RHP Yoervis Medina
For two years, from 2013-14, he struck out 131 in 125 innings with a 2.81 ERA before he went kaboom. Relievers, man.

RHP Edward Mujica
He was an All-Star in 2013 and cashed in with a $9.5 million contract from Boston. Decent shot at being in bullpen.

LHP James Russell
It could come down to the veteran Russell or Stumpf, a Rule 5 pick, for the job of lefty specialist.

RHP Jake Thompson
He just turned 22, and he has a great chance at being one of the first call-ups for the rotation.

C J.P. Arencibia
He spent most of his time last season as a first baseman in triple A, which is where he could find himself again.

C Andrew Knapp
His 55 games at Reading were incredible. But they were just 55 games, and many were played at a hitter's ballpark.

C Gabriel Lino
Once traded for Jim Thome, he's probably ticketed for a longer stint at double A.

C Logan Moore
Always regarded by scouts a possible major-league backup because of his polished defense and game-calling.

2B Emmanuel Burriss
The 31-year-old infielder has played five major-league games in the last three seasons.

SS J.P. Crawford
As a 20-year-old, he walked 63 times and struck out 54. The sort of talent that makes you dream.

2B Ryan Jackson He has two career hits; both are against Cy Young winners (R.A. Dickey, Dallas Keuchel).

2B Angelys Nina
He spent nine years in the Rockies organization, plays four positions, and has a career .725 OPS in the minors.

1B Brock Stassi
He posted gaudy numbers as a 25-year-old who repeated double-A Reading.

OF David Lough
He appeared in 196 games for Baltimore over the last two seasons, vaulting him to the top of the call-up line should an injury occur.

OF Nick Williams
He'll play center field for Lehigh Valley, and a major-league debut is totally within reach in 2016.