Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. BHP Group (BHP) downgraded to Underperform from Neutral at BofA/Merrill with analyst Jason Fairclough saying the Chinese economy is likely to get worse before getting better. 2. Hexcel (HXL) downgraded to Sell from Neutral at Goldman Sachs with analyst Noah Poponak saying after re-rating year-to-date, the shares are the high-end of the historical valuation range. 3. Tapestry (TPR) downgraded to Perform from Outperform at Oppenheimer, to Neutral from Buy at MKM Partners, to Neutral from Conviction Buy at Goldman Sachs, to Neutral from Overweight at Piper Jaffray, and to Neutral from Outperform at Credit Suisse. 4. Whiting Petroleum (WLL) downgraded to Market Perform from Outperform at Wells Fargo with analyst Gordon Douthat saying the company's free cash generation potential is highly sensitive to oil price levels. 5. Best Inc (BEST) downgraded to Sector Weight from Overweight at KeyBanc with analyst Hans Chung citing the company's Q2 results. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.