Photo: Jeff Chiu / Associated Press Image 1 of / 12 Caption Close

Image 2 of 12 <b>1. Quarterbacks</b> Colin Kaepernick is armed with a new contract and entering his third year in the system. Two words: lift off. <b>1. Quarterbacks</b> Colin Kaepernick is armed with a new contract and entering his third year in the system. Two words: lift off. Photo: Marcio Jose Sanchez / Associated Press

Image 3 of 12 2. Running backs Frank Gore is not going gently into that good night; expect no drop off from the 30-year-old. The team added two young players in rookie Carlos Hyde and Marcus Lattimore to increase competition. Frank Gore is not going gently into that good night; expect no drop off from the 30-year-old. The team added two young players in rookie Carlos Hyde and Marcus Lattimore to increase competition. less 2. Running backs Frank Gore is not going gently into that good night; expect no drop off from the 30-year-old. The team added two young players in rookie Carlos Hyde and Marcus Lattimore to increase Frank Gore is not going gently into that good night; expect no drop off from the 30-year-old. The team added two young players in rookie Carlos Hyde and Marcus Lattimore to increase ... more Photo: Jonathan Daniel / Getty Images

Image 4 of 12 3. Wide receivers The team adds Brandon Lloyd and Stevie Johnson to a healthy Michael Crabtree and the ageless Anquan Boldin. Meanwhile, young players Quinton Patton and rookie Bruce Ellington will battle it out for playing time and possibly a roster spot. The most improved area of the team and it’s not close. The team adds Brandon Lloyd and Stevie Johnson to a healthy Michael Crabtree and the ageless Anquan Boldin. Meanwhile, young players Quinton Patton and rookie Bruce Ellington will battle it out for playing time and possibly a roster spot. The most improved area of the team and it’s not close. less 3. Wide receivers The team adds Brandon Lloyd and Stevie Johnson to a healthy Michael Crabtree and the ageless Anquan Boldin. Meanwhile, young players Quinton Patton and rookie Bruce Ellington will The team adds Brandon Lloyd and Stevie Johnson to a healthy Michael Crabtree and the ageless Anquan Boldin. Meanwhile, young players Quinton Patton and rookie Bruce Ellington will ... more Photo: Elise Amendola / Associated Press

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Image 6 of 12 <b>4. Offensive line</b> The team already has an enviable starting five and now they add depth with Martinizing – acquiring Jonathan Martin and drafting former USC center Marcus Martin. <b>4. Offensive line</b> The team already has an enviable starting five and now they add depth with Martinizing – acquiring Jonathan Martin and drafting former USC center Marcus Martin. Photo: Jeff Chiu / Associated Press

Image 7 of 12 5. Tight ends Vernon Davis has already made a statement about his contract, don’t expect him to holdout. Backup Vance McDonald has another year in the system and street free agent Derek Carrier could be the surprise of training camp. Vernon Davis has already made a statement about his contract, don’t expect him to holdout. Backup Vance McDonald has another year in the system and street free agent Derek Carrier could be the surprise of training camp. less 5. Tight ends Vernon Davis has already made a statement about his contract, don’t expect him to holdout. Backup Vance McDonald has another year in the system and street free agent Derek Carrier Vernon Davis has already made a statement about his contract, don’t expect him to holdout. Backup Vance McDonald has another year in the system and street free agent Derek Carrier ... more Photo: Harry How / Getty Images

Image 8 of 12 6. Defensive line The team returns Tank Carradine and Ian Williams from injury last season. However, Justin Smith had his second off-season surgery in two years and is entering his 14th season. The 49ers have to start thinking about replacing the irreplaceable. The team returns Tank Carradine and Ian Williams from injury last season. However, Justin Smith had his second off-season surgery in two years and is entering his 14th season. The 49ers have to start thinking about replacing the irreplaceable. less 6. Defensive line The team returns Tank Carradine and Ian Williams from injury last season. However, Justin Smith had his second off-season surgery in two years and is entering his 14th season. The The team returns Tank Carradine and Ian Williams from injury last season. However, Justin Smith had his second off-season surgery in two years and is entering his 14th season. The ... more Photo: Jeff Siner / McClatchy-Tribune News Service

Image 9 of 12 <b>7. Linebackers</b> The team will likely be without its two best players in NaVorro Bowman (knee) and Aldon Smith (probable suspension) for at least the first half of the season. <b>7. Linebackers</b> The team will likely be without its two best players in NaVorro Bowman (knee) and Aldon Smith (probable suspension) for at least the first half of the season. Photo: Brant Ward / The Chronicle

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Image 11 of 12 8. Secondary The starting four has been totally revamped from only two years ago. The constantly shifting secondary is the most complex in the league, which has hid deficiencies. Now, with so many new players, they might have to cut back on their scheme. The starting four has been totally revamped from only two years ago. The constantly shifting secondary is the most complex in the league, which has hid deficiencies. Now, with so many new players, they might have to cut back on their scheme. less 8. Secondary The starting four has been totally revamped from only two years ago. The constantly shifting secondary is the most complex in the league, which has hid deficiencies. Now, with so many The starting four has been totally revamped from only two years ago. The constantly shifting secondary is the most complex in the league, which has hid deficiencies. Now, with so many ... more Photo: Christian Petersen / Getty Images