Steven Patterson and Alex Lees have signed new contracts with county champions Yorkshire.
Seamer Patterson, 31, has penned a two-year deal until December 2016, with England Lions opener Lees committing his future until 2019.
Patterson, who took 36 LV= County Championship wickets at an average of 27.81 last season, said: "I'm delighted to commit my immediate future to the club.
"The team is performing well and to be part of that success has been special. I want to continue contributing to the team with solid performances.
"We have a tight unit and we know after winning the championship last year we are going to have to improve our game further to retain the title. That challenge excites us all and we will be doing all we can to continue our efforts amongst the elite of English cricket."
The 21-year-old Lees is currently in South Africa with the Lions.
Last season he scored 971 championship runs at an average of a little over 44, while also leading the way for Yorkshire in the Royal London One-Day Cup.
Delighted to have committed my future to @Yorkshireccc great team and better blokes some hard work ahead of us looking forward to it #YCCC
— Alex Lees (@aleesy14) February 4, 2015
"It has been an incredible year for me and signing a new contract tops it off nicely," said Lees.
"It is a great honour to play for Yorkshire. To have that privilege over the next few years is very satisfying. I have a personal goal of continuing to test myself against all bowling attacks, scoring big runs and doing my bit to help the club prosper.
"The sign of a great side is to be successful over a period of time. We have to build on what we achieved in 2014 and hopefully go onto dominate the championship. The new campaign will be a test of our mental strength.
"I also believe that we have the right blend of youth and experience, especially with the signings of Aaron Finch and Glenn Maxwell, to make a strong push in limited-overs cricket. We certainly need to improve and become a force in all formats of the game."