5th might be a little generous.
Here's a list I found:
Starting pitchers
Gerrit Cole (29 years old, 7.4 WAR)
Stephen Strasburg (31, 5.7) -- can opt out of 4 years, $100 million remaining on contract
Hyun-Jin Ryu (33, 4.8)
Zack Wheeler (30, 4.7)
Jake Odorizzi (30, 4.3)
José Quintana (31, 3.3) -- $11.5 million club option for 2020 ($1 million buyout)
Madison Bumgarner (30, 3.2)
Homer Bailey (34, 2.9)
Michael Pineda (30, 2.7)
Yu Darvish (33, 2.6) -- can opt out of 4 years, $81 million remaining on contract
Kyle Gibson (32, 2.5)
Cole Hamels (36, 2.5)
Adam Wainwright (38, 2.2)
Tanner Roark (33, 2.0)
Wade Miley (33, 2.0)
Brett Anderson (32, 2.0)
Iván Nova (33, 2.0)
Martín Pérez (29, 1.9) -- $7.5 million club option for 2020 ($500,000 buyout)
Andrew Cashner (33, 1.8)
Jason Vargas (37, 1.8) -- $8 million club option for 2020 ($2 million buyout)
Rick Porcello (31, 1.8)
Julio Teheran (29, 1.6) -- $12 million club option for 2020 ($1 million buyout)
Jordan Lyles (29, 1.6)
Gio Gonzalez (34, 1.4)
Jake Arrieta (34, 1.1) -- can opt out of 1 year, $20 million remaining on contract unless Phillies exercise 2-year, $40 million option
Rich Hill (40, 0.9)
Dallas Keuchel (32, 0.8)
Chris Archer (31, 0.7) -- $9 million club option for 2020 ($1.75 million buyout)
Matt Moore (31, 0.5)
Clay Buchholz (35, 0.1)
Tyson Ross (33, 0.0)
Félix Hernández (34, -0.1)
Jhoulys Chacín (32, -0.1)
Jeremy Hellickson (33, -0.1)
Odrisamer Despaigne (33, -0.1)
Michael Wacha (28, -0.2)
Alex Wood (29, -0.2)
Edinson Vólquez (36, -0.2)
Marco Estrada (36, -0.2)
Shelby Miller (29, -0.2)
Clayton Richard (36, -0.2)
Drew Smyly (29, -0.3)
Wade LeBlanc (35, -0.3)
Matt Harvey (31, -0.3)
Héctor Noesi (33, -0.3)
Ervin Santana (37, -0.4)
Ross Detwiler (34, -0.6)
Trevor Cahill (32, -0.8)
Derek Holland (33, -1.0)
Edwin Jackson (36, -1.1)