Watch out for these 5 under-the-radar SF Giants. They could be key to a postseason run.

From Opening Day through the final game of the first half, the Giants received critical contributions from players up and down their roster. Stars such as Brandon Crawford and Buster Posey have led the way with career-best numbers at the plate while ace Kevin Gausman pitched his way to his first career All-Star selection with one of the most dominant runs by a Giants starter since the club moved to San Francisco in 1958.