Tyler Schau of AgMarket.net joins Market Talk to break down the cattle market's rebound after Monday's sell-off, what Friday's Cattle on Feed and Inventory reports really showed and why the Douglas, Arizona border reopening rattled deferred cattle contracts. Plus: extreme heat impacts on Kansas feedyards, boxed beef seasonality heading into Labor Day, and a full grain market rundown as corn, spring wheat, canola and soybeans all face a critical weather stretch through August.