If a player has the stats 14(15) under the "Apps" column for a particular competition, it means that the player has appeared in that competition 29 times in total, out of which he started in 14 matches and came on as a substitute in 15 matches.
Reserves Statistics
If a player has the stats 14(15) under the "Apps" column for a particular competition, it means that the player has appeared in that competition 29 times in total, out of which he started in 14 matches and came on as a substitute in 15 matches.