No concern. Yeah, he's got his second highest monthly OPS of the season; guy is still ripping doubles, and basically the main difference is he has 2 triples in August instead of 2 more dongs. I don't know how anyone can be concerned with Anthony Rizzo and especially for 'only' having an .831 OPS over a 5 week span. I don't think this is much of a slump, but even if it was, that doesn't mean there should be any concern. He had a month long slump last year where his OPS was in the .500s and he recovered just fine.