NEW YORK (Reuters) - U.S. oil futures dipped in electronic trading Sunday evening, extending losses from last week that marked the eighth week of losses out of the last nine.Trading was extremely volatile last week, in an extension of the selling that has dominated trading since early March as demand collapsed 30% due to the pandemic. Global production cuts have not kept pace with the collapse in demand.U.S. West Texas Intermediate futures were down 32 cents to $16.62 a barrel as of 6:15 p.m...