Time Cost for the fight: ~38 seconds
First optional in Roxanne's gym, adds quite a bit of consistency to the run (routed for Alpha Sapphire but has some benefits in Omega Ruby for potential marathon/race type runs)

Benefits: 
Level 10 for Roxanne's Geodude (RT rolls change)
Level 11 for Roxanne's Nosepass (Tackle rolls change)
Level 12 for Clark's Geodude (Rollout rolls change)
Level 13 for Grunt Pooch (more likely to 3hko with WG x3, more likely to outspeed)
Level 14 for Hideki (!) (defensive ranges shift, offensive ranges shift, more likely to outspeed)
Level 15 for Brawly's Machop, more likely to put in heal range with Silk Scarf on (skip taking it off)
Marshtomp for Grunt 2
	- Far more likely to OHKO Zubat w/ Rock Tomb
	- Far more likely to outspeed Zubat
	- Can OHKO Carvanha with Soft Sand Mud Shot
On Plusle/Minun girl, +1 Mud Shot WITH SOFT SAND is a good range on Plusle and nearly guaranteed on Minun
Level 18 for Rival 2 Slugma (defensive ranges shift)
Level 21 for Wattson's Magneton, outspeed with 0-1 neutral speed
Level 22 for Wilton's Bagon, slightly better 2HKO