INDIANAPOLIS -- Dale Earnhardt Jr. indicated Friday he is feeling a little better as he battles balance issues and nausea believed to be from concussions.Earnhardt, who has been working with doctors for the past 10 days, will miss his second consecutive race this weekend.Today is the 1st day in many that I sensed improvement, Earnhardt tweeted Friday morning. Seen small gains during my physical therapy as well. Light at the end of the tunnel.Earnhardt, 41, initially thought his symptoms were from a sinus infection or allergies. Having been in wrecks June 12 at Michigan and July 2 at Daytona -- as well as having missed two races in 2012 after suffering two concussions in a span of six weeks -- spurred Earnhardt to see a neurologist last week.The tweet from Earnhardt, who visited the shop Wednesday, was encouraging for team owner Rick Hendrick.I want him to be healthy and right when he gets in the car and the doctors are going to dictate that, Hendrick said. The news has been really good. The tweet this morning was really good. He looks good. Hes sharp.Im excited about getting him back, but Ive tried to leave him alone. ... He misses this. He misses his team. He came to see his team [Wednesday]. He saw the guys and it really lifted them.Earnhardt was replaced by one his Xfinity Series drivers, Alex Bowman, last week at New Hampshire and will be replaced by four-time Sprint Cup champion Jeff Gordon this weekend at Indianapolis and next week at Pocono. There is no timetable for Earnhardts return.They can give me a lot of exercises that retrain my brain to handle what I need to handle -- its just going to take a lot of patience, Earnhardt said Monday on his The Dale Jr. Download podcast. I take my health and quality of life as a top priority. ... I am going to take this slow and strictly take the advice of my doctors.On the podcast, Earnhardt said his ImPACT test -- a test that measures cognitive function such as memory and reaction time -- matched a previously taken test that is used as a baseline to determine effects of a concussion. Earnhardt is seeing doctors at the University of Pittsburgh Medical Center Sports Medicine Concussion Program.Dr. Mark Lovell, who developed the ImPACT test and is the chief science officer of ImPACT applications, said it is encouraging that Earnhardts recent results have matched his baseline. Lovell is not treating Earnhardt.You can have other symptoms of concussion that are not specifically cognitive -- not related to memory -- [so] we dont just look at the cognitive scores, Lovell said. We look at, is their balance OK? Do they have headaches? Do they have other signs or symptoms that arent purely of the cognitive variety?Lovell said an athlete typically would undergo an exertion test to determine if the balance and nausea symptoms return. He said when he was treating athletes, he would want to see someone undergo the exertion test for a few days without symptoms.The brain undergoes a physiological change, Lovell said. So there are actual chemical changes that take place. You want that process to settle down before somebody goes back in to [avoid] risk of another injury.By doing the exertional exercises, youre basically stressing the system. Its kind of like a stress test for the brain ... to make sure they are OK before they go back in.Lovell added that there is no expected timetable for an athlete to recover.The brain is complicated, Lovell said. Its not like any other injury. Its complicated by the fact that it can look differently in different people. ... [It] is really important to recognize that there is no testing for a concussion, an MRI scan.What happens in brain with a concussion is generally more of a physiological reaction, a chemical reaction.Sports Jerseys . -- Team after team passed on Andre Ellington in the draft. Stitched Sports Jerseys . The Masters champion and winner of last weeks Australian PGA has a three-round total of 14-under 199 at Royal Melbourne. "Im in a really good position for tomorrow," Scott said. https://www.discountsportsjerseyscheap.com/ . Self was acquired from the Buffalo Bandits in a trade for Alex Hill midway through last season, and made his debut in Rochester on March 16, 2013. Cheap Sports Jerseys . Now that hes hitting streaking teammates with pin-point passes for easy layups, Love is asserting himself as one of the true superstars in the league. Clearance Sports Jerseys .Y. - Jerome Samson scored once in regulation and again in the shootout as the St.JACKSONVILLE, Fla. -- After making a diving catch in the back of the end zone, Jordy Nelson celebrated with teammates and then took a knee.It was a private moment that seemed to signal the end of a long road back from a knee injury.Nelson played his first meaningful game in 20 months Sunday, finishing with six catches for 32 yards and a touchdown in a victory at Jacksonville . Nelson didnt show his usual big-play ability, but he found the end zone and probably gained some confidence in his surgically repaired right knee.It feels great having Jordy back, quarterback Aaron Rodgers said. He does so many things well out there. He had a great second and third reaction on the TD catch .Nelson, who tore the anterior cruciate ligament in his right knee in the 2015 preseason, left the visiting locker room before media were allowed in, so his reaction to his first real game since the 2014 NFC championship will have to wait. It also was his first TD catch in 630 days, since Dec. 21, 2014, at Tampa Bay.It was great, fellow receiver Davante Adams said. He came back just like he always does. He made several key catches for us to get us yards and first downs when we needed it. He brings a lot to this offense. Werre all glad to have him back out there with us.ddddddddddddNelson had half his catches in a four-play stretch late in the first half. The final one was the biggest of the day, though. He ran by linebacker Paul Posluszny, settled into an open spot in Jacksonvilles zone and then threw both arms up to let Rodgers know he was open.Rodgers, meanwhile, was dancing in the pocket. He took a step forward, started to move left, backpedaled and then sprinted to his right. Somewhere in there, Rodgers spotted Nelson and zipped the ball just past Prince Amukamaras outstretched hands for a touchdown and a 14-10 lead.I know they look to him, Jaguars coach Gus Bradley said. We kind of had an idea that they are a really good combination. Theres a lot of trust that goes on between those two. They know each other real well, where theyre going to be on certain routes and Aaron trusts him. Whenever you have that type of a combination, thats what all teams are trying to build and they are both elite players.---AP NFL website: www.pro32.ap.org and AP NFL Twitter feed: http://twitter.com/AP-NFL ' ' '