Hard hitting opener Robin Uthappa (56, 10x4) and C Raghu (62, 8x4) were the other notable scorers for Karnataka, while Haryana medium pacer Joginder Sharma, who rattled the hosts in the morning with a two-wicket burst, returned with a haul of 3 for 73.
Skipper Yere Goud, playing for his home State after a gap of 13 years, won the toss and elected to bat. Joginder struck telling blows, removing opener Rowland Barrington and Bharat Chipli to reduce Karnataka to two for 35. However, Robin and Raghu added an invaluable 109 for the third wicket to consolidate the Karnataka innings.
Three quick wickets at this stage, with Sunny Singh removing Robin, Joginder trapping Raghu and Sumit Sharma sending back Goud with a brilliant throw, pushed Karnataka to a corner.
However, Tilak and Joshi resurrected the hosts' innings by taking the score past the 300 mark. The duo added 119 runs in 170 balls, staying together for exactly two hours so far.
Karnataka 301 for 6 (Robin Uthappa 56, C Raghu 62, Tilak Naidu 84 batting, Sunil Joshi 36 batting; Joginder Sharma 3/72) vs Haryana.