winning streak

a winning streak
a lucky streak — полоса удач, полоса везения; счастливая полоса
to have a winning streak OR to be on a winning streak

Example: The team is on a winning streak after scoring three runs in a row. — Выиграв три забега подряд, команда вошла в полосу везения.

see also
[на гребне волны],
[на волне успеха]
[string of good luck]
lucky streak
[on a roll]

opp.
[bad patch]
[dry spell]