The Nifty 50, as expected, rebounded to near 23,250 intraday, but the sell-on-rise strategy remained at the forefront, which resulted in wiping out all those gains and closing flat with a negative bias. The index continued its downtrend for the seventh consecutive session amid volatility. As long as the index stays below 23,250, consolidation is likely to continue in the upcoming sessions, with crucial support at 22,800, experts said.