Philippe Clement now has the worst Old Firm record as a Rangers manager since the First World War.
The Belgian boss saw his side defeated on penalties in the Premier Sports Cup Final to Celtic after a thrilling 3-3 draw at Hampden.
It's now six games without a win for Clement against Celtic - with four of those defeats in 90 minutes.
And the last time Rangers went six Old Firm games without a win was under William Walton from 1912 to 1914.
Celtic won six games in a row in that spell with the last of those coming on November 1914 in a 2-1 victory - when World War One was already five months old.
Walton later died in a tragic boating accident in 1920.
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But Clement still has four more games to avoid the tag of the manager with the worst-ever run in the Glasgow showdowns.
Hoops managerial legend Willie Maley went ten games without a win in this fixture from 1931 to 1935, although six of the games were draws.
The sequence ended at Ibrox in September 1935, where Celtic won 2-1 - their first win at Rangers' stadium since 1921.
