it never rains, but it pours
Definition:  misfortunes or difficult situations tend to follow each other in rapid succession or to arrive all at the same time
Usage:  the team not only lost the game but three of its best players were injured – the coach learned it the hard way that it never rains, but it pours

SEPEDI
Translation:  ga e ke e e na eupša e a tšhela
Proverb: ditlabonyane ke ditlaboima

XITSONGA
Translation:  a yi ni kambe yo halaka kunene
Proverb: ti vuya ti nga siviwangi

TSHIVENḒA
Translation:  a i ni fhedzi i tou shela
Proverb: ṋama ya wela maḓini, tshiḽi a si tshithihi