Any you horse players here, know when seeing a gray spot near the horses reins means (white spot, grayish foam) this spot is usually evident when warming up on the track, I have had trainers and horse people tell me its sweat, or adrenaline, but i will am a conspiracy theorist and think they cheat, I see a lot of winners have this spot at the end of the race, and no other horse will have it. Any merit to this claim. I usually last minute blast the us tote machine when seeing this spot, difficult to see though, pre race, always at finish line you notice.