USDA trimmed U.S. corn and soybean crop outlooks but more harvest results needed to signal even lower yield potential.

USDA begins cutting its corn, soybean crop estimates.

Estimated U.S. and global corn carryover came in slightly above expectations, while 2019-20 soybean carry declined from August's estimates.

Traders looking for USDA to reports smaller corn and soybean crop forecasts.

Weekly corn export sales were just below the bottom end of pre-report expectations, while wheat sales were just above the top end.

Quiet session of positioning waiting for clues to where demand may improve.

Grain markets wait for clarity on U.S. corn, soybean yields.

Corn gets rally started after USDA cuts crop ratings this week.

Traders surveyed by Reuters (by Bloomberg for cotton) anticipate USDA will lower its crop estimates for corn, soybeans and cotton from the agency’s initial forecasts in August.

Pre-report estimates signal traders anticipate the expected drop in crop size will lead to reductions in the U.S. corn and soybean ending stocks forecasts for 2019-20 in Thursday’s Supply & Demand Report.