winning streak

winning 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.

also
[string of good luck]
[lucky streak]

see also
[на гребне волны],
[на волне успеха]
opp.
[bad patch]
[dry spell]