Wrong conclusion. Sano's walks helped Walker get extra at bats to get all those counting stats. Outs are a real thing too. Nothing against Walker, I like him, but he's got flaws... well documented ones at that, and something I'd add that AA pitchers capitalized on during the second half. Yes, protection is a real thing, but it wasn't Walker protecting Sano. Sano was likely protecting those guys around him, which is why he was batting in the 3/4 spot.