Yuvraj was batting on 95 alongside Mandeep, who was on 154 off 228 balls. Medium pacer Sudeep Tyagi was the most successful bowler for Saurashtra with figures of two for 51 in 15 overs.
Yuvraj made a statement with another solid knock after not being named among the 30 probables for the 2015 World Cup.
The stylish left-hander smashed 11 boundaries and couple of sixes in his 176-ball effort.
Brief scores: Punjab 327 for 3 in 90 overs (Mandeep Singh batting 154, Yuvraj Singh batting 95; Sudeep Tyagi 2/51, Kamlesh Makwana 1/81) against Saurashtra.